The session mode used by ARVRInterface.initialize when setting up the WebXR session.
This doesn't have any effect on the interface when already initialized.
Possible values come from url=https://developer.mozilla.org/en-US/docs/Web/API/XRSessionModeWebXR's XRSessionMode/url, including: "immersive-vr", "immersive-ar", and "inline".
The session mode used by ARVRInterface.initialize when setting up the WebXR session. This doesn't have any effect on the interface when already initialized. Possible values come from url=https://developer.mozilla.org/en-US/docs/Web/API/XRSessionModeWebXR's XRSessionMode/url, including: "immersive-vr", "immersive-ar", and "inline".