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/Image/RelativeImageStub.js

@@ -0,0 +1,31 @@
+/**
+ * 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';
+
+// This is a stub for flow to make it understand require('./icon.png')
+// See metro/src/Bundler/index.js
+
+const AssetRegistry = require('@react-native/assets-registry/registry');
+
+const RelativeImageStub = (AssetRegistry.registerAsset({
+  __packager_asset: true,
+  fileSystemLocation: '/full/path/to/directory',
+  httpServerLocation: '/assets/full/path/to/directory',
+  width: 100,
+  height: 100,
+  scales: [1, 2, 3],
+  hash: 'nonsense',
+  name: 'icon',
+  type: 'png',
+}): number);
+
+// eslint-disable-next-line @react-native/monorepo/no-commonjs-exports
+module.exports = RelativeImageStub;