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/@babel/runtime/helpers/initializerDefineProperty.js

@@ -0,0 +1,9 @@
+function _initializerDefineProperty(e, i, r, l) {
+  r && Object.defineProperty(e, i, {
+    enumerable: r.enumerable,
+    configurable: r.configurable,
+    writable: r.writable,
+    value: r.initializer ? r.initializer.call(l) : void 0
+  });
+}
+module.exports = _initializerDefineProperty, module.exports.__esModule = true, module.exports["default"] = module.exports;