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/lib0/dist/set.d.ts

@@ -0,0 +1,5 @@
+export function create(): Set<any>;
+export function toArray<T>(set: Set<T>): Array<T>;
+export function first<T>(set: Set<T>): T | undefined;
+export function from<T>(entries: Iterable<T>): Set<T>;
+//# sourceMappingURL=set.d.ts.map