Make StateWrapperImpl Internal (#50920)

Summary:
Pull Request resolved: #50920

We construct this from JNI, which doesn't care about visibility, and then only want to expose `StateWrapper` as the public interface.

Changelog:
[Android][Removed] - Make StateWrapperImpl Internal

Reviewed By: Abbondanzo

Differential Revision: D73161592

fbshipit-source-id: b787e31e190dc52a02d73cadfa77b1c1defb9703

Author: NickGerleman

packages/react-native/ReactAndroid/api/ReactAndroid.api

@@ -2384,15 +2384,6 @@ public final class com/facebook/react/fabric/FabricUIManagerProviderImpl : com/f
 	public fun createUIManager (Lcom/facebook/react/bridge/ReactApplicationContext;)Lcom/facebook/react/bridge/UIManager;
 }
 
-public final class com/facebook/react/fabric/StateWrapperImpl : com/facebook/jni/HybridClassBase, com/facebook/react/uimanager/StateWrapper {
-	public fun destroyState ()V
-	public fun getStateData ()Lcom/facebook/react/bridge/ReadableNativeMap;
-	public fun getStateDataMapBuffer ()Lcom/facebook/react/common/mapbuffer/ReadableMapBuffer;
-	public fun toString ()Ljava/lang/String;
-	public fun updateState (Lcom/facebook/react/bridge/WritableMap;)V
-	public final fun updateStateImpl (Lcom/facebook/react/bridge/NativeMap;)V
-}
-
 public final class com/facebook/react/fabric/events/EventBeatManager : com/facebook/jni/HybridClassBase, com/facebook/react/uimanager/events/BatchEventDispatchedListener {
 	public fun <init> ()V
 	public fun onBatchEventDispatched ()V

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/StateWrapperImpl.kt

@@ -23,7 +23,7 @@ import com.facebook.react.uimanager.StateWrapper
  */
 @SuppressLint("MissingNativeLoadLibrary")
 @DoNotStripAny
-public class StateWrapperImpl private constructor() : HybridClassBase(), StateWrapper {
+internal class StateWrapperImpl private constructor() : HybridClassBase(), StateWrapper {
 
   private external fun initHybrid()