sync with gtk:adwaita for 3.32
There's been a number of changes in adwaita. Once the dust settles we need to fold those changes back to the shell.
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Color updates (primary color scheme is Adwaita:light, overview is toned down (osd style). Prepare for easy Adwaita:dark opt in.) -
New switch design -
New rounded menubars, popovers (5x border-raidus as opposed to 3)