Merge branch 'wip/baedert/for-master' into 'master'

Wip/baedert/for master

See merge request GNOME/gtk!1828

diff --cc docs/reference/gtk/gtk4-sections.txt
Simple merge

diff --cc gtk/gtklabel.c
Simple merge

diff --cc gtk/gtkpopover.c
Simple merge

diff --cc gtk/gtkwidget.c
Simple merge

diff --cc gtk/gtkwindow.c
Simple merge