Fully rollout FabricSharedEventPipeline (#42949)

Summary: Pull Request resolved: #42949

Reviewed By: javache, sammy-SC

Differential Revision: D53552253

fbshipit-source-id: 67e9db9bd48dd9c37a78e74faf0406fef0c3ad8d

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

@@ -1896,7 +1896,6 @@ public class com/facebook/react/config/ReactFeatureFlags {
 	public static field enableFabricPendingEventQueue Z
 	public static field enableFabricRenderer Z
 	public static field enableFabricRendererExclusively Z
-	public static field enableFabricSharedEventPipeline Z
 	public static field enableMountHooks Z
 	public static field enableOnDemandReactChoreographer Z
 	public static field enableRemoveDeleteTreeInstruction Z

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java

@@ -115,9 +115,6 @@ public class ReactFeatureFlags {
   /** Use native view configs in bridgeless mode. */
   public static boolean useNativeViewConfigsInBridgelessMode = false;
 
-  /** Utilize shared Event C++ pipeline with fabric's renderer */
-  public static boolean enableFabricSharedEventPipeline = true;
-
   /** When enabled, Fabric will avoid cloning notes to perform state progression. */
   public static boolean enableClonelessStateProgression = false;
 

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

@@ -80,7 +80,6 @@
 import com.facebook.react.uimanager.events.BatchEventDispatchedListener;
 import com.facebook.react.uimanager.events.EventCategoryDef;
 import com.facebook.react.uimanager.events.EventDispatcher;
-import com.facebook.react.uimanager.events.EventDispatcherImpl;
 import com.facebook.react.uimanager.events.FabricEventDispatcher;
 import com.facebook.react.uimanager.events.RCTEventEmitter;
 import com.facebook.react.views.text.TextLayoutManager;
@@ -219,11 +218,7 @@ public FabricUIManager(
     mMountingManager = new MountingManager(viewManagerRegistry, mMountItemExecutor);
     mMountItemDispatcher =
         new MountItemDispatcher(mMountingManager, new MountItemDispatchListener());
-    if (ReactFeatureFlags.enableFabricSharedEventPipeline) {
-      mEventDispatcher = new FabricEventDispatcher(reactContext);
-    } else {
-      mEventDispatcher = new EventDispatcherImpl(reactContext);
-    }
+    mEventDispatcher = new FabricEventDispatcher(reactContext);
     mBatchEventDispatchedListener = batchEventDispatchedListener;
     mReactApplicationContext.addLifecycleEventListener(this);