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/full/date/get-year.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../actual/date/get-year');
+
+module.exports = parent;

node_modules/core-js/full/date/index.js

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

node_modules/core-js/full/date/now.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../actual/date/now');
+
+module.exports = parent;

node_modules/core-js/full/date/set-year.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../actual/date/set-year');
+
+module.exports = parent;

node_modules/core-js/full/date/to-gmt-string.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../actual/date/to-gmt-string');
+
+module.exports = parent;

node_modules/core-js/full/date/to-iso-string.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../actual/date/to-iso-string');
+
+module.exports = parent;

node_modules/core-js/full/date/to-json.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../actual/date/to-json');
+
+module.exports = parent;

node_modules/core-js/full/date/to-primitive.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../actual/date/to-primitive');
+
+module.exports = parent;

node_modules/core-js/full/date/to-string.js

@@ -0,0 +1,4 @@
+'use strict';
+var parent = require('../../actual/date/to-string');
+
+module.exports = parent;