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/zustand/react/shallow.js

@@ -0,0 +1,14 @@
+'use strict';
+
+var React = require('react');
+var shallow = require('zustand/vanilla/shallow');
+
+function useShallow(selector) {
+  const prev = React.useRef(undefined);
+  return (state) => {
+    const next = selector(state);
+    return shallow.shallow(prev.current, next) ? prev.current : prev.current = next;
+  };
+}
+
+exports.useShallow = useShallow;