FRE-600: Fix code review blockers

- Consolidated duplicate UndoManagers to single instance
- Fixed connection promise to only resolve on 'connected' status
- Fixed WebSocketProvider import (WebsocketProvider)
- Added proper doc.destroy() cleanup
- Renamed isPresenceInitialized property to avoid conflict

Co-Authored-By: Paperclip <noreply@paperclip.ing>

node_modules/react-native/React/CxxBridge/RCTMessageThread.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <memory>
+#import <string>
+
+#import <Foundation/Foundation.h>
+
+#import <React/RCTJavaScriptExecutor.h>
+#import <cxxreact/MessageQueueThread.h>
+#import <atomic>
+
+namespace facebook::react {
+
+class RCTMessageThread : public MessageQueueThread, public std::enable_shared_from_this<RCTMessageThread> {
+ public:
+  RCTMessageThread(NSRunLoop *runLoop, RCTJavaScriptCompleteBlock errorBlock);
+  ~RCTMessageThread() override;
+  void runOnQueue(std::function<void()> && /*func*/) override;
+  void runOnQueueSync(std::function<void()> && /*func*/) override;
+  void quitSynchronous() override;
+  void setRunLoop(NSRunLoop *runLoop);
+
+ private:
+  void tryFunc(const std::function<void()> &func);
+  void runAsync(std::function<void()> func);
+  void runSync(std::function<void()> func);
+
+  CFRunLoopRef m_cfRunLoop;
+  RCTJavaScriptCompleteBlock m_errorBlock;
+  std::atomic_bool m_shutdown;
+};
+
+} // namespace facebook::react