fix(chat-panel): react rendering

[wwayne]

I tried another way - destroying previous instance and create a new one

function useServer(api: ServerApi) {
  const [server, setServer] = useState<ClientApi | null>(null)
  let abortController:AbortController

  useEffect(() => {
    const isInIframe = window.self !== window.top
    if (isInIframe) {
      abortController?.abort()
      abortController = new AbortController()
      setServer(createServer(api, abortController.signal))
    }
  }, [])

  return server
}

But in this way, the thread lib will throw error, so I keep using isCreated for simplify