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/fast-glob/out/readers/async.d.ts

@@ -0,0 +1,10 @@
+import * as fsWalk from '@nodelib/fs.walk';
+import { Entry, ReaderOptions, Pattern } from '../types';
+import Reader from './reader';
+import ReaderStream from './stream';
+export default class ReaderAsync extends Reader<Promise<Entry[]>> {
+    protected _walkAsync: typeof fsWalk.walk;
+    protected _readerStream: ReaderStream;
+    dynamic(root: string, options: ReaderOptions): Promise<Entry[]>;
+    static(patterns: Pattern[], options: ReaderOptions): Promise<Entry[]>;
+}