Disable confine mode dropdown when full-screen
Disable confine mode dropdown when full-screen

After hard-locking the mouse confine mode to `Always` in full-screen to
prevent confine issues from popping up, the confine mode dropdown in
settings had confusing UX due to seemingly having no effect when
full-screen.

peppy/osu,smoogipoo/osu,NeoAdonis/osu,smoogipooo/osu,UselessToucan/osu,peppy/osu,peppy/osu,ppy/osu,ppy/osu,NeoAdonis/osu,ppy/osu,UselessToucan/osu,smoogipoo/osu,smoogipoo/osu,NeoAdonis/osu,peppy/osu-new,UselessToucan/osu