macos: prohibit fullscreen transition if in transtion
This prevents performing additional fullscreen transitions while
a transition is already in progress.
Closes #4808
See merge request GNOME/gtk!4612
(cherry picked from commit 15b7a4572b)
69a0a5cf macos: Prohibit changing the full-screen state of a window during a full-screen transition
229e4b58 macos: Corrected code style
24 KiB
24 KiB