Add a "Head-Locked Audio" toggle for Browser Windows in the Home Environment

Currently, audio from the Meta Quest Browser in the home environment is strictly world-locked (spatialized). The sound is physically anchored to the window, meaning it gets weaker if I move away and shifts between my left and right ears when I turn my head.

I would like a toggle to switch a window's audio to head-locked (direct stereo, or surround around by head). When enabled, this would bypass the 3D spatialization and play the audio exactly as if I had headphones on. The sound would remain perfectly centered, balanced, and at full volume in my ears, regardless of where I place the window in the room or where I choose to sit and look.

This would improve media playback in many situations, including when wathing something on a big browser window far away.