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/array-species-create.js

@@ -0,0 +1,8 @@
+'use strict';
+var arraySpeciesConstructor = require('../internals/array-species-constructor');
+
+// `ArraySpeciesCreate` abstract operation
+// https://tc39.es/ecma262/#sec-arrayspeciescreate
+module.exports = function (originalArray, length) {
+  return new (arraySpeciesConstructor(originalArray))(length === 0 ? 0 : length);
+};