Mark classes of package uimanager as @nullsafe (facebook#43156)

Summary:
Pull Request resolved: facebook#43156

All these classes are NullSafe, let's mark them as NullSafe(Local) to ensure lint detect errors in the future

changelog: [internal] internal

Reviewed By: javache

Differential Revision: D54027185

fbshipit-source-id: f3c337def2d42cf1f6fed2e2eb4938a84a51f8d4

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/GuardedFrameCallback.java

@@ -8,13 +8,15 @@
 package com.facebook.react.uimanager;
 
 import android.view.Choreographer;
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.bridge.JSExceptionHandler;
 import com.facebook.react.bridge.ReactContext;
 
 /**
  * Abstract base for a Choreographer FrameCallback that should have any RuntimeExceptions it throws
  * handled by the {@link JSExceptionHandler} registered if the app is in dev mode.
  */
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public abstract class GuardedFrameCallback implements Choreographer.FrameCallback {
 
   private final ReactContext mReactContext;

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/IllegalViewOperationException.java

@@ -9,9 +9,11 @@
 
 import android.view.View;
 import androidx.annotation.Nullable;
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.bridge.JSApplicationCausedNativeException;
 
 /** An exception caused by JS requesting the UI manager to perform an illegal view operation. */
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public class IllegalViewOperationException extends JSApplicationCausedNativeException {
 
   @Nullable private View mView;