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/interface.js

@@ -0,0 +1,21 @@
+/**
+ * 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';
+
+// NOTE: Hmm... I don't think declaring variables within this module actually
+// accomplishes anything besides documenting that these globals are expected to
+// exist. So I think the correct "fix" to this lint warning is to delete this
+// entire file. But in lieu of doing that... no harm for now in keeping this
+// file around, even if it is only for documentation purposes. ¯\_(ツ)_/¯
+
+/* eslint-disable no-unused-vars */
+
+declare var __DEV__: boolean;