With T97631 in, we need to revisit Notifications popup.
While on normal interfaces/Desktop/Vector/WikimediaUI theme we now have 32px height as button sizing, OOUI dialogs, especially confirmation dialogs feature 44px, which is sufficient for touch and pointer devices on height alone.
Should we stay with the current 50px height here, or can we go for 44px to be harmonious with surrounding interface elements when re-aligning elements in the popup?
For the harmonious reasons, I'd personally be in favor of 44px, here's a take:
Please ignore the wrong preferences icon, already filed and patched under T190175
