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/Libraries/Utilities/warnOnce.js

@@ -0,0 +1,32 @@
+/**
+ * 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.
+ *
+ * @flow strict
+ * @format
+ */
+
+'use strict';
+
+const warnedKeys: {[string]: boolean, ...} = {};
+
+/**
+ * A simple function that prints a warning message once per session.
+ *
+ * @param {string} key - The key used to ensure the message is printed once.
+ *                       This should be unique to the callsite.
+ * @param {string} message - The message to print
+ */
+function warnOnce(key: string, message: string) {
+  if (warnedKeys[key]) {
+    return;
+  }
+
+  console.warn(message);
+
+  warnedKeys[key] = true;
+}
+
+export default warnOnce;