Reduce visibility of AnimationsDebugModule

Summary:
In an attempt to reduce footprint of React Native Android public APIs we are reducing visibility of classes and interfaces that are not meant to be used publicly OR are public but have no usages.
As part of our analysis, which involved looking for usages inside the Meta codebase and code search in OSS, we've detected that this class/interface is public but it's not used from other packages.

If you are using this class or interface please comment in this PR and we will restate the public access.

changelog: [Android][Changed] Reducing visibility of AnimationsDebugModule

bypass-github-export-checks

Reviewed By: arushikesarwani94

Differential Revision: D49803302

fbshipit-source-id: 4c5f51d44c0d21e024d1a411fa425302372456eb

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/debug/AnimationsDebugModule.java

@@ -23,7 +23,7 @@
  * going from one screen to another).
  */
 @ReactModule(name = NativeAnimationsDebugModuleSpec.NAME)
-public class AnimationsDebugModule extends NativeAnimationsDebugModuleSpec {
+class AnimationsDebugModule extends NativeAnimationsDebugModuleSpec {
 
   private @Nullable FpsDebugFrameCallback mFrameCallback;
   private @Nullable final DeveloperSettings mCatalystSettings;