Migrate EventDispatcher interface to Kotlin (#48445)

Summary:
Pull Request resolved: #48445

# Changelog:
[Internal] -

As in the title.

Differential Revision: D67760373

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

@@ -0,0 +1,40 @@
+/*
+ * 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.uimanager.common.UIManagerType
+
+public interface EventDispatcher {
+  /** Sends the given Event to JS, coalescing eligible events if JS is backed up. */
+  public fun dispatchEvent(event: Event<*>)
+
+  public fun dispatchAllEvents()
+
+  /** Add a listener to this EventDispatcher. */
+  public fun addListener(listener: EventDispatcherListener)
+
+  /** Remove a listener from this EventDispatcher. */
+  public fun removeListener(listener: EventDispatcherListener)
+
+  public fun addBatchEventDispatchedListener(listener: BatchEventDispatchedListener)
+
+  public fun removeBatchEventDispatchedListener(listener: BatchEventDispatchedListener)
+
+  @Deprecated("Use the modern version with RCTModernEventEmitter")
+  @Suppress("DEPRECATION")
+  public fun registerEventEmitter(@UIManagerType uiManagerType: Int, eventEmitter: RCTEventEmitter)
+
+  public fun registerEventEmitter(
+      @UIManagerType uiManagerType: Int,
+      eventEmitter: RCTModernEventEmitter
+  )
+
+  public fun unregisterEventEmitter(@UIManagerType uiManagerType: Int)
+
+  public fun onCatalystInstanceDestroyed()
+}

packages/react-native/ReactAndroid/src/test/java/com/facebook/react/uimanager/JSPointerDispatcherTest.kt

@@ -22,9 +22,9 @@ import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.mockito.ArgumentMatcher
-import org.mockito.Mockito.argThat
-import org.mockito.Mockito.mock
-import org.mockito.Mockito.verify
+import org.mockito.kotlin.argThat
+import org.mockito.kotlin.mock
+import org.mockito.kotlin.verify
 import org.robolectric.RobolectricTestRunner
 import org.robolectric.RuntimeEnvironment
 
@@ -75,7 +75,7 @@ class JSPointerDispatcherTest {
     val ev =
         createMotionEvent(
             MotionEvent.ACTION_DOWN, childRect.centerX().toFloat(), childRect.centerY().toFloat())
-    val mockDispatcher: EventDispatcher = mock(EventDispatcher::class.java)
+    val mockDispatcher: EventDispatcher = mock()
     pointerDispatcher.handleMotionEvent(ev, mockDispatcher, false)
     verify(mockDispatcher).dispatchEvent(argThat(EventWithName(PointerEventHelper.POINTER_DOWN)))
   }