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/@solidjs/router/dist/lifecycle.d.ts

@@ -0,0 +1,5 @@
+import { BeforeLeaveLifecycle, LocationChange } from "./types.js";
+export declare function createBeforeLeave(): BeforeLeaveLifecycle;
+export declare function saveCurrentDepth(): void;
+export declare function keepDepth(state: any): any;
+export declare function notifyIfNotBlocked(notify: (value?: string | LocationChange) => void, block: (delta: number | null) => boolean): () => void;