deprecate hasConstants from ReactModule annotation (#39489)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/39489

## Changelog
[Android][Deprecated] - deprecate hasConstants from ReactModule annotation

this is not used in our framework anymore, deprecating

Reviewed By: cortinico

Differential Revision: D49262867

fbshipit-source-id: 90e5ee75cf20345c6121e77a3328f9c96f104cdb

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/module/annotations/ReactModule.java

@@ -16,6 +16,9 @@ import java.lang.annotation.Target;
 /**
  * Annotation for use on {@link com.facebook.react.bridge.BaseJavaModule}s to describe properties
  * for that module.
+ *
+ * @deprecated This property is unused and it's planning to be removed in a future version of React
+ *     Native. Please refrain from using it.
  */
 @Retention(RUNTIME)
 @Target(TYPE)
@@ -38,6 +41,7 @@ public @interface ReactModule {
    * Whether this module has constants to add, defaults to true as that is safer for when a correct
    * annotation is not included
    */
+  @Deprecated
   boolean hasConstants() default true;
 
   /**

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/websocket/WebSocketModule.java

@@ -36,7 +36,7 @@ import okhttp3.WebSocket;
 import okhttp3.WebSocketListener;
 import okio.ByteString;
 
-@ReactModule(name = NativeWebSocketModuleSpec.NAME, hasConstants = false)
+@ReactModule(name = NativeWebSocketModuleSpec.NAME)
 public final class WebSocketModule extends NativeWebSocketModuleSpec {
   public interface ContentHandler {
     void onMessage(String text, WritableMap params);