Mark classes of package uimanager as @nullsafe

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

bypass-github-export-checks

changelog: [internal] internal

Reviewed By: javache

Differential Revision: D54027179

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

@@ -9,11 +9,13 @@
 
 import android.view.View;
 import android.view.ViewGroup;
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.bridge.UiThreadUtil;
 import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
 
+@Nullsafe(Nullsafe.Mode.LOCAL)
 class ViewHierarchyDumper {
 
   public static JSONObject toJSON(View view) throws JSONException {

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

@@ -8,12 +8,14 @@
 package com.facebook.react.uimanager;
 
 import android.graphics.Color;
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.bridge.ReadableMap;
 import com.facebook.react.bridge.ReadableType;
 import java.util.Arrays;
 import java.util.HashSet;
 
 /** Keys for props that need to be shared across multiple classes. */
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public class ViewProps {
 
   public static final String VIEW_CLASS_NAME = "RCTView";

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

@@ -7,10 +7,12 @@
 
 package com.facebook.react.uimanager;
 
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.common.ClearableSynchronizedPool;
 import com.facebook.yoga.YogaNode;
 
 /** Static holder for a recycling pool of YogaNodes. */
+@Nullsafe(Nullsafe.Mode.LOCAL)
 class YogaNodePool {
 
   private static final Object sInitLock = new Object();