Mark classes of package uimanager as @Nullsafe (#43161)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/43161

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

changelog: [internal] internal

bypass-github-export-checks

Reviewed By: javache

Differential Revision: D54027187

fbshipit-source-id: a25024ba7f7d4893a2b7d083e2ba10c5f2e3a035

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

@@ -7,10 +7,13 @@
 
 package com.facebook.react.uimanager;
 
+import com.facebook.infer.annotation.Nullsafe;
+
 // Common conditionals:
 //   - `kind == PARENT` checks whether the node can host children in the native tree.
 //   - `kind != NONE` checks whether the node appears in the native tree.
 
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public enum NativeKind {
   // Node is in the native hierarchy and the HierarchyOptimizer should assume it can host children
   // (e.g. because it's a ViewGroup). Note that it's okay if the node doesn't support children. When

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

@@ -7,10 +7,13 @@
 
 package com.facebook.react.uimanager;
 
+import com.facebook.infer.annotation.Nullsafe;
+
 /**
  * Exception thrown when a class tries to access a native view by a tag that has no native view
  * associated with it.
  */
+@Nullsafe(Nullsafe.Mode.LOCAL)
 class NoSuchNativeViewException extends IllegalViewOperationException {
 
   public NoSuchNativeViewException(String detailMessage) {

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

@@ -9,11 +9,13 @@ package com.facebook.react.uimanager;
 
 import androidx.annotation.Nullable;
 import androidx.core.util.Pools;
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.WritableMap;
 import com.facebook.react.uimanager.events.Event;
 
 /** Event used to notify JS component about changes of its position or dimensions */
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public class OnLayoutEvent extends Event<OnLayoutEvent> {
 
   private static final Pools.SynchronizedPool<OnLayoutEvent> EVENTS_POOL =