Function onXRSessionEnd

onXRSessionEnd(fn: (evt: XRSessionEventArgs) => void): () => void
Add a listener for when an XR session ends This event is triggered when the XR session is ended, either by the user or by the application before all other XR end events
Parameters
- fn: (evt: XRSessionEventArgs) => void
  The function to call when the XR session ends
Returns () => void
A function to remove the listener
Example
```
onXRSessionEnd((evt) => {
   console.log("XR session ended", evt);
});
```