fix(Pointer): set object interactor scale correctly on renderer

The object interactor renderer was not having the scale set on it
but instead it was the whole transform of the script being rescaled
which was incorrect.

Author: thestonefox

Assets/VRTK/Scripts/Pointers/PointerRenderers/VRTK_BasePointerRenderer.cs

@@ -549,7 +549,7 @@ protected virtual void ScaleObjectInteractor(Vector3 scaleAmount)
         {
             if (objectInteractor != null)
             {
-                VRTK_SharedMethods.SetGlobalScale(transform, scaleAmount);
+                VRTK_SharedMethods.SetGlobalScale(objectInteractor.transform, scaleAmount);
             }
         }