ReactHost: Make ReactInstanceEventListener APIs public

Summary:
The ReactInstanceManager allows applications to register a ReactInstanceEventListener with itself.

Exposing a similar functionality to ReactHost. So, applications can do the same in bridgeless.

Changelog: [Android][Added] - Make ReactInstanceEventListener available on ReactHost

Differential Revision: D58890092

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

@@ -208,6 +208,7 @@ public class com/facebook/react/ReactFragment$Builder {
 
 public abstract interface class com/facebook/react/ReactHost {
 	public abstract fun addBeforeDestroyListener (Lkotlin/jvm/functions/Function0;)V
+	public abstract fun addReactInstanceEventListener (Lcom/facebook/react/ReactInstanceEventListener;)V
 	public abstract fun createSurface (Landroid/content/Context;Ljava/lang/String;Landroid/os/Bundle;)Lcom/facebook/react/interfaces/fabric/ReactSurface;
 	public abstract fun destroy (Ljava/lang/String;Ljava/lang/Exception;)Lcom/facebook/react/interfaces/TaskInterface;
 	public abstract fun getCurrentReactContext ()Lcom/facebook/react/bridge/ReactContext;
@@ -230,6 +231,7 @@ public abstract interface class com/facebook/react/ReactHost {
 	public abstract fun onWindowFocusChange (Z)V
 	public abstract fun reload (Ljava/lang/String;)Lcom/facebook/react/interfaces/TaskInterface;
 	public abstract fun removeBeforeDestroyListener (Lkotlin/jvm/functions/Function0;)V
+	public abstract fun removeReactInstanceEventListener (Lcom/facebook/react/ReactInstanceEventListener;)V
 	public abstract fun setJsEngineResolutionAlgorithm (Lcom/facebook/react/JSEngineResolutionAlgorithm;)V
 	public abstract fun start ()Lcom/facebook/react/interfaces/TaskInterface;
 }

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

@@ -148,4 +148,10 @@ public interface ReactHost {
   public fun addBeforeDestroyListener(onBeforeDestroy: () -> Unit)
 
   public fun removeBeforeDestroyListener(onBeforeDestroy: () -> Unit)
+
+  /** Add a listener to be notified of ReactInstance events. */
+  public fun addReactInstanceEventListener(listener: ReactInstanceEventListener)
+
+  /** Remove a listener previously added with {@link #addReactInstanceEventListener}. */
+  public fun removeReactInstanceEventListener(listener: ReactInstanceEventListener)
 }