Plasma 5.27.4 backport recommendation to fix oversized title buttons in GTK3 apps

[Fusion Future]

This commit partially reverts a previous change in Breeze GTK theme.

https://invent.kde.org/plasma/breeze-gtk/-/commit/c5e757a198321208c6b1e99313652577c263ecc0  <https://github.com/sddm/sddm/pull/1603>

The previous commit attempts to make title buttons in GTK3 apps 
clickable even at the edges but it makes title buttons in GTK3 apps on 
Wayland look oversized and blurry when scaling is 100%.

Sorry for the disruption.