Function onXRSessionEnd

onXRSessionEnd(fn): 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
  - - (evt): void
    - Parameters
      evt: XRSessionEventArgs
      Returns void
Returns void
Example
```
onXRSessionEnd((evt) => {
   console.log("XR session ended", evt);
});
```