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/actual/data-view/get-float16.js

@@ -0,0 +1,5 @@
+'use strict';
+var parent = require('../../stable/data-view/get-float16');
+require('../../modules/esnext.data-view.get-float16');
+
+module.exports = parent;

node_modules/core-js/actual/data-view/index.js

@@ -0,0 +1,6 @@
+'use strict';
+var parent = require('../../stable/data-view');
+require('../../modules/esnext.data-view.get-float16');
+require('../../modules/esnext.data-view.set-float16');
+
+module.exports = parent;

node_modules/core-js/actual/data-view/set-float16.js

@@ -0,0 +1,5 @@
+'use strict';
+var parent = require('../../stable/data-view/set-float16');
+require('../../modules/esnext.data-view.set-float16');
+
+module.exports = parent;