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/core-js/modules/web.set-interval.js

@@ -0,0 +1,12 @@
+'use strict';
+var $ = require('../internals/export');
+var globalThis = require('../internals/global-this');
+var schedulersFix = require('../internals/schedulers-fix');
+
+var setInterval = schedulersFix(globalThis.setInterval, true);
+
+// Bun / IE9- setInterval additional parameters fix
+// https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-setinterval
+$({ global: true, bind: true, forced: globalThis.setInterval !== setInterval }, {
+  setInterval: setInterval
+});