[visionOS] Allow to disable spatial audio

[lchamp]

Currently when using Moonlight (from Testflight for AVP) the audio is spatial. Meaning that the audio comes from the position of the window (further window sound further, opposite for closer, left/right/top/bottom/...).

I'd like to be able to disable the spatial audio sometimes. Especially if, for example, I play a game for which I'd rather have the stereo/5.1 sound from the content directly in my ears instead of the window position.

It can be done on some apps sometime, see how here: https://www.reddit.com/r/VisionPro/comments/1b375tb/comment/ksrsef3/

However it doesn't appear when using Moonlight. Not sure what can/should be done.
Hopefully it could be just a setting/boolean to specify this... 🤞🏼