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/stable/promise/all-settled.js

@@ -0,0 +1,5 @@
+'use strict';
+var parent = require('../../es/promise/all-settled');
+require('../../modules/web.dom-collections.iterator');
+
+module.exports = parent;

node_modules/core-js/stable/promise/any.js

@@ -0,0 +1,5 @@
+'use strict';
+var parent = require('../../es/promise/any');
+require('../../modules/web.dom-collections.iterator');
+
+module.exports = parent;

node_modules/core-js/stable/promise/finally.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../es/promise/finally');
+
+module.exports = parent;

node_modules/core-js/stable/promise/index.js

@@ -0,0 +1,5 @@
+'use strict';
+var parent = require('../../es/promise');
+require('../../modules/web.dom-collections.iterator');
+
+module.exports = parent;

node_modules/core-js/stable/promise/try.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../es/promise/try');
+
+module.exports = parent;

node_modules/core-js/stable/promise/with-resolvers.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../es/promise/with-resolvers');
+
+module.exports = parent;