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/drizzle-orm/entity.d.cts

@@ -0,0 +1,7 @@
+export declare const entityKind: unique symbol;
+export declare const hasOwnEntityKind: unique symbol;
+export interface DrizzleEntity {
+    [entityKind]: string;
+}
+export type DrizzleEntityClass<T> = ((abstract new (...args: any[]) => T) | (new (...args: any[]) => T)) & DrizzleEntity;
+export declare function is<T extends DrizzleEntityClass<any>>(value: any, type: T): value is InstanceType<T>;