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/fastq/eslint.config.js

@@ -0,0 +1,11 @@
+const neostandard = require('neostandard')
+
+module.exports = [
+  ...neostandard(),
+  {
+    name: 'node-0.10-compatibility',
+    rules: {
+      'object-shorthand': 'off' // Disable ES6 object shorthand for Node.js 0.10 compatibility
+    }
+  }
+]