Convert RCTModernEventEmitter

Summary:
# Changelog:
[Internal] -

As in the title.

Differential Revision: D67793108

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/RCTModernEventEmitter.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.uimanager.events
+
+import com.facebook.react.bridge.WritableMap
+
+/**
+ * This is a transitional replacement for [RCTEventEmitter] that works with Fabric and non-Fabric
+ * renderers. [RCTEventEmitter] works with Fabric as well, but there are negative perf implications
+ * and it should be avoided.
+ *
+ * This interface will *also* be deleted in the distant future and be replaced with a new interface
+ * that doesn't need the old `receiveEvent` method at all. But for the foreseeable future, this is
+ * the recommended interface to use for EventEmitters.
+ */
+@Suppress("DEPRECATION")
+public interface RCTModernEventEmitter : RCTEventEmitter {
+  public fun receiveEvent(surfaceId: Int, targetTag: Int, eventName: String, event: WritableMap?)
+
+  public fun receiveEvent(
+      surfaceId: Int,
+      targetTag: Int,
+      eventName: String,
+      canCoalesceEvent: Boolean,
+      customCoalesceKey: Int,
+      event: WritableMap?,
+      @EventCategoryDef category: Int
+  )
+
+  @Deprecated("Dispatch the TouchEvent using [EventDispatcher] instead")
+  public fun receiveTouches(event: TouchEvent)
+}

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/ReactEventEmitter.kt

@@ -110,26 +110,20 @@ internal class ReactEventEmitter(private val reactContext: ReactApplicationConte
 
   override fun receiveEvent(
       surfaceId: Int,
-      targetReactTag: Int,
+      targetTag: Int,
       eventName: String,
       canCoalesceEvent: Boolean,
       customCoalesceKey: Int,
       event: WritableMap?,
       @EventCategoryDef category: Int
   ) {
-    @UIManagerType val uiManagerType = getUIManagerType(targetReactTag, surfaceId)
+    @UIManagerType val uiManagerType = getUIManagerType(targetTag, surfaceId)
     if (uiManagerType == UIManagerType.FABRIC) {
       fabricEventEmitter?.receiveEvent(
-          surfaceId,
-          targetReactTag,
-          eventName,
-          canCoalesceEvent,
-          customCoalesceKey,
-          event,
-          category)
+          surfaceId, targetTag, eventName, canCoalesceEvent, customCoalesceKey, event, category)
     } else if (uiManagerType == UIManagerType.DEFAULT) {
       val defaultEmitter = defaultEventEmitter
-      @Suppress("DEPRECATION") defaultEmitter?.receiveEvent(targetReactTag, eventName, event)
+      @Suppress("DEPRECATION") defaultEmitter?.receiveEvent(targetTag, eventName, event)
     }
   }