This is an Element project (in the vector-im repo) so the Copyright
should be for New Vector: it was incorrectly attributed to the
foundation for some files (and some files were missing headers).
Hopefully explained in comment: we have a heisenbug where we sometimes
lack audio from a certain participant, so this simplifies the audio
path by removing the workaround required to do AEC with spatial audio
on chrome.
Just use isSelected directly rather than makking the button have its
own state. Also, the isPressed from useToggleButton looks like its
whether the user has the mouse button down on it or not rather than
whether the toggle switch is on, which was making the state wrong.
