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/selection-proxy.d.cts

@@ -0,0 +1,9 @@
+import { entityKind } from "./entity.cjs";
+import { View } from "./sql/sql.cjs";
+import { Subquery } from "./subquery.cjs";
+export declare class SelectionProxyHandler<T extends Subquery | Record<string, unknown> | View> implements ProxyHandler<Subquery | Record<string, unknown> | View> {
+    static readonly [entityKind]: string;
+    private config;
+    constructor(config: SelectionProxyHandler<T>['config']);
+    get(subquery: T, prop: string | symbol): any;
+}