media.webaudio.enabled is not a thing anymore -- we should not govern it with our security slider
A cypherpunk in #15988 (moved) notes that media.webaudio.enabled is long gone but we still set it in our security slider.
We should
a) stop having that pref in our security slider settings b) investigate whether there is a replacement pref we should track instead
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information