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/internals/has-own-property.js

@@ -0,0 +1,12 @@
+'use strict';
+var uncurryThis = require('../internals/function-uncurry-this');
+var toObject = require('../internals/to-object');
+
+var hasOwnProperty = uncurryThis({}.hasOwnProperty);
+
+// `HasOwnProperty` abstract operation
+// https://tc39.es/ecma262/#sec-hasownproperty
+// eslint-disable-next-line es/no-object-hasown -- safe
+module.exports = Object.hasOwn || function hasOwn(it, key) {
+  return hasOwnProperty(toObject(it), key);
+};