perhaps add basic test w/ no external ref urls

[AdrianScott]

e.g. basic spinning cube? (less CORS issues)

[danrossi]

I just did. I needed a remote one because it needs to be initialized on metadata, local one doesn't work with waiting on metadata.

https://github.com/danrossi/three-webgpu-renderer/blob/master/tests/webgpu_video_panorama_local.html