Kotlinify LayoutCreateAnimation (#43740)

Summary:
Pull Request resolved: #43740

Changelog: [Internal]

As part of the Sustainability Week (see [post](https://fb.workplace.com/groups/251759413609061/permalink/742797531171911/)).

Reviewed By: rshest

Differential Revision: D55588908

fbshipit-source-id: 4e502e32e6b43ca1df866ab7ba4653d3cee0ec65

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutCreateAnimation.java → packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutCreateAnimation.kt

@@ -5,19 +5,13 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.react.uimanager.layoutanimation;
-
-import com.facebook.infer.annotation.Nullsafe;
+package com.facebook.react.uimanager.layoutanimation
 
 /**
  * Class responsible for handling layout view creation animation, applied to view whenever a valid
  * config was supplied for the layout animation of CREATE type.
  */
-/* package */ @Nullsafe(Nullsafe.Mode.LOCAL)
-class LayoutCreateAnimation extends BaseLayoutAnimation {
+internal class LayoutCreateAnimation : BaseLayoutAnimation() {
 
-  @Override
-  boolean isReverse() {
-    return false;
-  }
+  override fun isReverse(): Boolean = false
 }