Minor Kotlin cleanup (#49000)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49000

Just found those nits around while looking at the codebase.
This clears things out and should have no runtime impact.

Changelog:
[Internal] [Changed] -

Reviewed By: mdvacca

Differential Revision: D68768384

fbshipit-source-id: bd3a30f1792a6f662d1f5b25855c89b6d43e72bb

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

@@ -26,7 +26,7 @@ internal class TransformAnimatedNode(
     transformConfigs =
         if (transforms == null) emptyList()
         else
-            List<TransformConfig>(transforms.size()) { i ->
+            List(transforms.size()) { i ->
               val transformConfigMap = checkNotNull(transforms.getMap(i))
               val property = transformConfigMap.getString("property")
               val type = transformConfigMap.getString("type")
@@ -46,7 +46,7 @@ internal class TransformAnimatedNode(
 
   fun collectViewUpdates(propsMap: JavaOnlyMap) {
     val transforms =
-        List<JavaOnlyMap>(transformConfigs.size) { i ->
+        List(transformConfigs.size) { i ->
           val transformConfig = transformConfigs[i]
           val transform =
               if (transformConfig is AnimatedTransformConfig) {

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

@@ -16,4 +16,4 @@ import com.facebook.proguard.annotations.DoNotStrip
  */
 @DoNotStrip
 internal class ObjectAlreadyConsumedException @DoNotStrip constructor(detailMessage: String) :
-    RuntimeException(detailMessage) {}
+    RuntimeException(detailMessage)

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/mounting/mountitems/DestroyUnmountedViewMountItem.kt

@@ -19,10 +19,7 @@ internal class DestroyUnmountedViewMountItem(
 ) : MountItem {
 
   override fun execute(mountingManager: MountingManager) {
-    val surfaceMountingManager = mountingManager.getSurfaceManager(_surfaceId)
-    if (surfaceMountingManager == null) {
-      return
-    }
+    val surfaceMountingManager = mountingManager.getSurfaceManager(_surfaceId) ?: return
     surfaceMountingManager.deleteView(reactTag)
   }
 

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/devloading/DevLoadingModule.kt

@@ -31,11 +31,11 @@ internal class DevLoadingModule(reactContext: ReactApplicationContext) :
   }
 
   override fun showMessage(message: String, color: Double?, backgroundColor: Double?) {
-    UiThreadUtil.runOnUiThread(Runnable { devLoadingViewManager?.showMessage(message) })
+    UiThreadUtil.runOnUiThread { devLoadingViewManager?.showMessage(message) }
   }
 
   override fun hide() {
-    UiThreadUtil.runOnUiThread(Runnable { devLoadingViewManager?.hide() })
+    UiThreadUtil.runOnUiThread { devLoadingViewManager?.hide() }
   }
 
   companion object {