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/array.test.d.ts

@@ -0,0 +1,13 @@
+export function testIsarrayPerformance(_tc: t.TestCase): void;
+export function testAppend(_tc: t.TestCase): void;
+export function testBasic(_tc: t.TestCase): void;
+export function testflatten(_tc: t.TestCase): void;
+export function testFolding(_tc: t.TestCase): void;
+export function testEvery(_tc: t.TestCase): void;
+export function testIsArray(_tc: t.TestCase): void;
+export function testUnique(_tc: t.TestCase): void;
+export function testBubblesortItemEdgeCases(tc: t.TestCase): void;
+export function testRepeatBubblesortItem(tc: t.TestCase): void;
+export function testRepeatBubblesort(tc: t.TestCase): void;
+import * as t from './testing.js';
+//# sourceMappingURL=array.test.d.ts.map