67cdd0bea2
A long time ago, the window list used to embed the bottom message
tray, which caused notifications to inherit the window-list's
font style.
Since that's no longer the case, we have no business in messing
with notification styling, so stop doing that.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/338>
(cherry picked from commit f1671bc206)