Script Break on VRCObjectSync Respawn

# Describe the bug in detail:
I'm coming into this problem where when I call `VRCObjectSync.Respawn()` on a VRCObjectSync component, even though the component exists on the gameobject, it gives me the error "Object reference not set to an instance of an object"

# Provide steps/code to reproduce the bug:
1. Call `Respawn()` on any VRCObjectSync component that exists on a gameobject.
2. Save the script and wait for the script to compile.
3. Go into play mode in Unity.
4. Trigger the behavior that calls `Respawn()`
5. Script breaks and both the UdonBehavior and UdonSharp throws an error.

# Expected behavior:
The expected result is for the VRCObjectSync component to be recognized and the object to respawn.

# Additional Information:
Here is the full stacktrace of the UdonBehavior error:
```
[UdonBehaviour] An exception occurred during Udon execution, this UdonBehaviour will be halted.
VRC.Udon.VM.UdonVMException: The VM encountered an error!
Exception Message:
  An exception occurred during EXTERN to 'VRCSDK3ComponentsVRCObjectSync.__Respawn__SystemVoid'.
      Parameter Addresses: 0x00000041
  
  Object reference not set to an instance of an object
----------------------
Program Counter was at: 2084
----------------------
Stack Dump:
  0: 0x0000000A
----------------------
Heap Dump:
  0x00000000: -8846834194911805839
  0x00000001: WhitelistedToggle
  0x00000002: 1960
  0x00000003: Whitelist (VRC.Udon.UdonBehaviour)
  0x00000004: UnityEngine.GameObject[]
  0x00000005: UnityEngine.GameObject[]
  0x00000006: UnityEngine.Canvas[]
  0x00000007: True
  0x00000008: False
  0x00000009: True
  0x0000000A: 4294967295
  0x0000000B: __0_player__param
  0x0000000C: __0_IsOnWhitelist
  0x0000000D: __0___0_IsOnWhitelist__ret
  0x0000000E: Mic Toggle (UnityEngine.Transform)
  0x0000000F: UnityEngine.Collider
  0x00000010: UnityEngine.MeshRenderer
  0x00000011: 0
  0x00000012: 1
  0x00000013: Mic Toggle (UnityEngine.GameObject)
  0x00000014: 768
  0x00000015: True
  0x00000016: 716
  0x00000017: False
  0x00000018: False
  0x00000019: True
  0x0000001A: Mic Toggle (VRC.Udon.UdonBehaviour)
  0x0000001B: DelayedRespawn
  0x0000001C: Update
  0x0000001D: 1960
  0x0000001E: Microphone (VRC.SDK3.Components.VRCObjectSync)
  0x0000001F: Microphone (UnityEngine.Transform)
  0x00000020: null
  0x00000021: VRC.SDK3.Components.VRCObjectSync
  0x00000022: True
  0x00000023: VRC.SDKBase.VRCPlayerApi
  0x00000024: True
  0x00000025: True
  0x00000026: Mic Toggle (UnityEngine.SphereCollider)
  0x00000027: 0
  0x00000028: False
  0x00000029: Microphone (UnityEngine.GameObject)
  0x0000002A: null
  0x0000002B: 0
  0x0000002C: 0
  0x0000002D: False
  0x0000002E: null
  0x0000002F: VRC.SDKBase.VRCPlayerApi
  0x00000030: True
  0x00000031: VRC.SDKBase.VRCPlayerApi
  0x00000032: 1
  0x00000033: True
  0x00000034: 0
  0x00000035: False
  0x00000036: True
  0x00000037: True
  0x00000038: True
  0x00000039: 1
  0x0000003A: Microphone (UnityEngine.GameObject)
  0x0000003B: 0
  0x0000003C: null
  0x0000003D: 1
  0x0000003E: 0
  0x0000003F: True
  0x00000040: Microphone (UnityEngine.GameObject)
  0x00000041: Microphone (VRC.SDK3.Components.VRCObjectSync)
  0x00000042: Microphone (UnityEngine.Transform)
  0x00000043: Microphone (VRC.SDK3.Components.VRCObjectSync)
  0x00000044: null
  0x00000045: False
  0x00000046: Microphone (VRC.SDK3.Components.VRCObjectSync)
  0x00000047: VRCSDKBaseNetworking.__get_LocalPlayer__VRCSDKBaseVRCPlayerApi
  0x00000048: VRCUdonCommonInterfacesIUdonEventReceiver.__SetProgramVariable__SystemString_SystemObject__SystemVoid
  0x00000049: VRCUdonCommonInterfacesIUdonEventReceiver.__SendCustomEvent__SystemString__SystemVoid
  0x0000004A: VRCUdonCommonInterfacesIUdonEventReceiver.__GetProgramVariable__SystemString__SystemObject
  0x0000004B: UnityEngineComponent.__GetComponent__T
  0x0000004C: UnityEngineCollider.__set_enabled__SystemBoolean__SystemVoid
  0x0000004D: UnityEngineRenderer.__set_enabled__SystemBoolean__SystemVoid
  0x0000004E: SystemArray.__get_Length__SystemInt32
  0x0000004F: SystemInt32.__op_Inequality__SystemInt32_SystemInt32__SystemBoolean
  0x00000050: SystemInt32.__op_LessThan__SystemInt32_SystemInt32__SystemBoolean
  0x00000051: SystemObjectArray.__Get__SystemInt32__SystemObject
  0x00000052: UnityEngineCanvas.__set_enabled__SystemBoolean__SystemVoid
  0x00000053: SystemInt32.__op_Addition__SystemInt32_SystemInt32__SystemInt32
  0x00000054: UnityEngineGameObject.__get_activeInHierarchy__SystemBoolean
  0x00000055: VRCSDKBaseNetworking.__SetOwner__VRCSDKBaseVRCPlayerApi_UnityEngineGameObject__SystemVoid
  0x00000056: SystemBoolean.__op_UnaryNegation__SystemBoolean__SystemBoolean
  0x00000057: VRCSDKBaseNetworking.__GetOwner__UnityEngineGameObject__VRCSDKBaseVRCPlayerApi
  0x00000058: UnityEngineGameObject.__SetActive__SystemBoolean__SystemVoid
  0x00000059: SystemBoolean.__op_Equality__SystemBoolean_SystemBoolean__SystemBoolean
  0x0000005A: VRCSDKBaseNetworking.__IsOwner__UnityEngineGameObject__SystemBoolean
  0x0000005B: VRCUdonCommonInterfacesIUdonEventReceiver.__SendCustomEventDelayedFrames__SystemString_SystemInt32_VRCUdonCommonEnumsEventTiming__SystemVoid
  0x0000005C: UnityEngineGameObject.__get_transform__UnityEngineTransform
  0x0000005D: UnityEngineObject.__op_Equality__UnityEngineObject_UnityEngineObject__SystemBoolean
  0x0000005E: VRCSDK3ComponentsVRCObjectSync.__Respawn__SystemVoid
  0x0000005F: UnityEngineComponent.__GetComponent__SystemType__UnityEngineComponent
----------------------
Inner Exception:
 ---> VRC.Udon.VM.UdonVMException: An exception occurred during EXTERN to 'VRCSDK3ComponentsVRCObjectSync.__Respawn__SystemVoid'.
    Parameter Addresses: 0x00000041
 ---> System.NullReferenceException: Object reference not set to an instance of an object
  at VRC.SDK3.ClientSim.ClientSimObjectSyncHelper.RespawnObject (VRC.SDK3.Components.VRCObjectSync sync) [0x00000] in .\Packages\com.vrchat.worlds\Integrations\ClientSim\Runtime\Helpers\ClientSimObjectSyncHelper.cs:18 
  at VRC.SDK3.Components.VRCObjectSync.Respawn () [0x00009] in <6ff4ff48394b436282bb70dc0ff277c2>:0 
  at VRC.Udon.Wrapper.Modules.ExternVRCSDK3ComponentsVRCObjectSync.__Respawn__SystemVoid (VRC.Udon.Common.Interfaces.IUdonHeap heap, System.Span`1[T] parameterAddresses) [0x0001d] in <b001fa9908f1453c979dae8b67f4c4f7>:0 
  at VRC.Udon.VM.UdonVM.Interpret () [0x00273] in <62e4a0d35446446b8fa1f8e5755bcfaa>:0 
   --- End of inner exception stack trace ---
  at VRC.Udon.VM.UdonVM.Interpret () [0x0033c] in <62e4a0d35446446b8fa1f8e5755bcfaa>:0 
   --- End of inner exception stack trace ---
  at VRC.Udon.VM.UdonVM.Interpret () [0x00436] in <62e4a0d35446446b8fa1f8e5755bcfaa>:0 
  at VRC.Udon.UdonBehaviour.RunProgram (System.UInt32 entryPoint) [0x00063] in .\Packages\com.vrchat.worlds\Runtime\Udon\UdonBehaviour.cs:1098 
UnityEngine.Debug:LogError (object,UnityEngine.Object)
VRC.Core.Logger:LogError (string,string,UnityEngine.Object)
VRC.Udon.UdonBehaviour:RunProgram (uint) (at ./Packages/com.vrchat.worlds/Runtime/Udon/UdonBehaviour.cs:1112)
VRC.Udon.UdonBehaviour:RunProgram (string) (at ./Packages/com.vrchat.worlds/Runtime/Udon/UdonBehaviour.cs:1072)
VRC.Udon.UdonBehaviour:SendCustomEvent (string) (at ./Packages/com.vrchat.worlds/Runtime/Udon/UdonBehaviour.cs:1743)
VRC.Udon.ClientBindings.UdonEventScheduler:ProcessFrameEvents (VRC.Udon.Common.Enums.EventTiming)
VRC.Udon.ClientBindings.UdonEventScheduler:RunScheduledEvents (VRC.Udon.Common.Enums.EventTiming)
VRC.Udon.UdonManager:Update () (at ./Packages/com.vrchat.worlds/Runtime/Udon/UdonManager.cs:376)
```

This is the UdonSharp error:
```
[UdonSharp] Assets/Assets/Scripts/Events/Whitelist/WhitelistedToggle.cs(94,27): Udon runtime exception detected!
  An exception occurred during EXTERN to 'VRCSDK3ComponentsVRCObjectSync.__Respawn__SystemVoid'.
      Parameter Addresses: 0x00000041
  
  Object reference not set to an instance of an object
```

And this is my code:
```csharp

using UdonSharp;
using UnityEngine;
using VRC.SDKBase;
using VRC.SDK3.Components;
using VRC.Udon;

public class WhitelistedToggle : UdonSharpBehaviour
{
    [Tooltip("Set this to the game object that contains the Whitelist script.")]
    public Whitelist whitelist;
    // private VRCPlayerApi localPlayer;


    [Tooltip("Add the objects that you want to toggle on and off.")]
    public GameObject[] objectsToToggle;

    [Tooltip("Add any of the toggled object's children that have udon behaviors.")]
    public GameObject[] childObjects;

    [Tooltip("A list of canvases to hide for unwhitelisted people.")]
    public Canvas[] hiddenCanvases;

    [Tooltip("If this option is enabled, the object will be respawned whenever it is toggled on.")]
    public bool respawnOnEnable;

    [Tooltip("If this option is enabled, this object will not be rendered for people who are not whitelisted.")]
    public bool hideMeshIfNotWhitelisted;

    [UdonSynced, FieldChangeCallback(nameof(ToggledOn))]
    private bool _toggledOn;

    void Start()
    {
    }

    void OnEnable() {
        bool onWhitelist = whitelist.IsOnWhitelist(Networking.LocalPlayer);
        this.GetComponent<Collider>().enabled = onWhitelist;
        if (hideMeshIfNotWhitelisted) {
            this.GetComponent<MeshRenderer>().enabled = onWhitelist;
        }
        
        if (hiddenCanvases.Length != 0) {
            foreach (Canvas canvas in hiddenCanvases) {
                canvas.enabled = onWhitelist;
            }
        }
        _toggledOn = objectsToToggle[0].activeInHierarchy;
    }

    public override void Interact() {
        // localPlayer = Networking.LocalPlayer;
        Networking.SetOwner(Networking.LocalPlayer, this.gameObject);
        ToggledOn = !ToggledOn;
    }

    public bool ToggledOn
    {
        set
        {
            _toggledOn = value;
            
            VRCPlayerApi owner = Networking.GetOwner(this.gameObject);
            
            if (objectsToToggle.Length != 0) {
                foreach (GameObject toggleObj in objectsToToggle) {
                    toggleObj.SetActive(value);
                    Networking.SetOwner(owner, toggleObj);
                }
            }

            if (childObjects.Length != 0) {
                // Debug.Log(childObjects.Length);
                foreach (GameObject thisObj in childObjects) {
                    Networking.SetOwner(owner, thisObj);
                }
            }

            if (respawnOnEnable && value == true && objectsToToggle.Length != 0 && Networking.IsOwner(this.gameObject)) {
                foreach (GameObject toggleObj2 in objectsToToggle) {
                    VRCObjectSync sync = toggleObj2.GetComponent<VRCObjectSync>();
                    if (sync == null) {
                        continue;
                    }
                    sync.Respawn();
                }
            }
        }
        get => _toggledOn;
    }
}
```

The error gets called during `sync.Respawn();`

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Script Break on VRCObjectSync Respawn #179

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Script Break on VRCObjectSync Respawn #179

Description

Describe the bug in detail:

Provide steps/code to reproduce the bug:

Expected behavior:

Additional Information:

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Metadata

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