XRInputSourcesChangeEvents are fired to indicate changes to the XRInputSources that are available to an XRSession. ref: https://immersive-web.github.io/webxr/#xrinputsourceschangeevent-interface
XRInputSourcesChangeEvents are fired to indicate changes to the XRInputSources that are available to an XRSession. ref: https://immersive-web.github.io/webxr/#xrinputsourceschangeevent-interface