write_sample Does not return when client disconnects

[Random12Guy]

To reproduce

1. Run the play from disk example.
2. Open the web browser and view the video
3. Close the browser early

The loop will carry on, so if you're streaming live video, it will never exit even if the client has closed the window.

loop {
        let nal = match h264.next_nal() {
                            Ok(nal) => nal,
                            Err(err) => {
                                println!("All video frames parsed and sent: {err}");
                                break;
                            }
        };
        video_track
        .write_sample(&Sample {
                    data: nal.data.freeze(),
                    duration: Duration::from_secs(1),
                     ..Default::default()
          })
         .await.unwrap();
}