This is an automatable manual test case as determined by a manual test case review with Brian a couple weeks ago.

Manual Test Case: WebXR supports VR/positional audio

Test case steps:
1. Go to https://immersive-web.github.io/webxr-samples/positional-audio.html on the test device
2. Attach headphones to the test device, and enter WebXR Presentation
3. Move headset to have music appear to come from different directions.

Verify that the relative position of the speakers affects the perceived location of the audio when the test device’s position is changed.