UI for local only posts and threaded mode is bugged on mobile

[aescling]

at least in the current beta version of firefox android at time of posting, leaving the modal for local only and threaded mode requires two taps. the first tap will (incorrectly) change the view to suggest that the settings are reverting to the state they were in before you opened the modal.

for example, if you open the modal and change local only to enabled, tapping once outside the modal will reset the view, to suggest local only posting is still disabled. however, if you tap outside again, local only posting will be enabled.

i’m tagging “needs info” because i could swear this is a problem i have seen before many months ago from instances running glitch edition, making it potentially part of #6.