Backport of "gtk4: Enable GtkGraphicsOffload::black-background property when building with GTK 4.16" into 0.13

Backport of !1673 (merged) "gtk4: Enable GtkGraphicsOffload::black-background property when building with GTK 4.16".

Commits:

• 38044858 gtk4: Enable GtkGraphicsOffload::black-background property when building with GTK 4.16

changed milestone to %0.13.1

added 0.13 Merge now labels

mentioned in merge request !1673 (merged)

removed Merge now label

assigned to @gstreamer-merge-bot

added 1 commit

• 0d83350f - gtk4: Enable GtkGraphicsOffload::black-background property when building with GTK 4.16

Compare with previous version

assigned to @gstreamer-backport-bot and unassigned @gstreamer-merge-bot

I couldn't merge this branch: CI failed! See pipeline https://gitlab.freedesktop.org/gstreamer-backport-bot/gst-plugins-rs/-/pipelines/1227586.

assigned to @gstreamer-merge-bot and unassigned @gstreamer-backport-bot

merged