Deprecated feature used

<img width="938" height="518" alt="Image" src="https://github.com/user-attachments/assets/4e45ce9a-4f5b-4229-8599-9f8d9df39055" />

  - Reflex version: 0.8.7
  - The screenshot attached
  - state.js:631 is using a deprecated beforeunload / unload event listener
  - Browser: Chrome 145.0.7632.109