Update slider prefab to new start/end position represetnation, and update animation state machine a bit

- OnInteractionEnded move to hover state instead of default state so that slider looks hovered if you let go in the hover region (if you let go out of hover region, the onhoverexitevent will fire and we will still go to default state)
- Update Slider Start Distance and Slider End Distance values.

Author: Julia Schwarz

Assets/MixedRealityToolkit.SDK/Features/UX/Prefabs/Sliders/PinchSlider.prefab

@@ -629,7 +629,7 @@ BoxCollider:
   m_IsTrigger: 0
   m_Enabled: 1
   serializedVersion: 2
-  m_Size: {x: 0.011999969, y: 0.023562621, z: 0.024000015}
+  m_Size: {x: 0.03, y: 0.04, z: 0.03}
   m_Center: {x: 0, y: 0, z: -0.012000037}
 --- !u!114 &7307063430134822088
 MonoBehaviour:
@@ -1042,8 +1042,8 @@ MonoBehaviour:
   thumbRoot: {fileID: 0}
   sliderValue: 0.5
   sliderAxis: 0
-  sliderStartPosition: {x: -0.125, y: -0, z: -0}
-  sliderEndPosition: {x: 0.125, y: 0, z: 0}
+  sliderStartDistance: -0.125
+  sliderEndDistance: 0.125
   OnValueUpdated:
     m_PersistentCalls:
       m_Calls: []
@@ -1076,7 +1076,7 @@ MonoBehaviour:
           m_ObjectArgumentAssemblyTypeName: UnityEngine.Object, UnityEngine
           m_IntArgument: 0
           m_FloatArgument: 0
-          m_StringArgument: Default
+          m_StringArgument: Hover
           m_BoolArgument: 0
         m_CallState: 2
     m_TypeName: Microsoft.MixedReality.Toolkit.UI.SliderEvent, Microsoft.MixedReality.Toolkit.SDK,