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/Fabric/AppleEventBeat.h

@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <ReactCommon/RuntimeExecutor.h>
+#include <react/renderer/core/EventBeat.h>
+#include <react/utils/RunLoopObserver.h>
+
+namespace facebook::react {
+
+class RuntimeScheduler;
+
+/*
+ * Event beat associated with JavaScript runtime.
+ * The beat is called on `RuntimeExecutor`'s thread induced by the UI thread
+ * event loop.
+ */
+class AppleEventBeat : public EventBeat, public RunLoopObserver::Delegate {
+ public:
+  AppleEventBeat(
+      std::shared_ptr<OwnerBox> ownerBox,
+      std::unique_ptr<const RunLoopObserver> uiRunLoopObserver,
+      RuntimeScheduler &RuntimeScheduler);
+
+#pragma mark - RunLoopObserver::Delegate
+
+  void activityDidChange(const RunLoopObserver::Delegate *delegate, RunLoopObserver::Activity activity)
+      const noexcept override;
+
+ private:
+  std::unique_ptr<const RunLoopObserver> uiRunLoopObserver_;
+};
+
+} // namespace facebook::react