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/dist/performance.cjs

@@ -0,0 +1,14 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+/* eslint-env browser */
+
+const measure = performance.measure.bind(performance);
+const now = performance.now.bind(performance);
+const mark = performance.mark.bind(performance);
+
+exports.mark = mark;
+exports.measure = measure;
+exports.now = now;
+//# sourceMappingURL=performance.cjs.map