Meta Quest browser shows a black screen for some webxr apps in latest patch

I've tracked this down to using "bounded-floor" as the reference space. Apps that use "local-floor" or "local" still work fine.

Since the code sample in the Godot docs uses "bounded-floor", lots of folks have copy-pasted that, meaning that most WebXR apps built with the Godot game engine are broken by this.

Here is the issue in the Godot issue queue:

https://github.com/godotengine/godot/issues/95039

Thanks in advance to the Meta Quest browser team for looking into this!