Required Bug Fixes

- Prefs not Initializing so that the toggle state was not synced
- Uncommented Addressables Headers
- Added Name References for Addressables to Editor AsmDef

Author: Selva1910

example/unity/DemoApp/Assets/FlutterUnityIntegration/Editor/Build.cs

@@ -10,8 +10,8 @@
 
 #if USING_ADDRESSABLES
 // uncomment for addressables
-//using UnityEditor.AddressableAssets;
-//using UnityEditor.AddressableAssets.Settings;
+using UnityEditor.AddressableAssets;
+using UnityEditor.AddressableAssets.Settings;
 #endif
 
 namespace FlutterUnityIntegration.Editor
@@ -148,9 +148,15 @@ private void Apply()
         }
 
         private void OnEnable()
+        {
+            InitPrefs();
+        }
+        private  void InitPrefs()
         {
             _pluginMode = EditorPrefs.GetBool(_persistentKey, false);
+            _usingAddressables = EditorPrefs.GetBool(_persistentKeyHasAddressable, false);
         }
+        
         //#endregion
 
 

example/unity/DemoApp/Assets/FlutterUnityIntegration/Editor/FlutterUnityIntegration.Editor.asmdef

@@ -1,7 +1,9 @@
 {
     "name": "FlutterUnityIntegration.Editor",
     "rootNamespace": "FlutterUnityIntegration.Editor",
-    "references": [],
+    "references": [
+        "Unity.Addressables.Editor"
+    ],
     "includePlatforms": [
         "Editor"
     ],