- Closes#1889
Whilst a simple change theoretically, the card has such a collection of
surfaces that can overlap other surfaces, it's challenging to get this
to work right! There's a real chance this will have broken something
z-index related (e.g. X overlaps Y when it should not), or (for related
reasons) broken curver corners on the card.
This is a slight behavioral change vs earlier v6 betas, but makes the media actions less surprising. This also allows for automated unmuting in a grid when a camera is selected, without having _every_ camera automatically unmuted.