Merge branch 'wip/chergert/fix-4094' into 'master'
authorMatthias Clasen <mclasen@redhat.com>
Fri, 9 Jul 2021 19:29:41 +0000 (19:29 +0000)
committerMatthias Clasen <mclasen@redhat.com>
Fri, 9 Jul 2021 19:29:41 +0000 (19:29 +0000)
joinedmenu: add helper to join menus instead of nesting

Closes #4094

See merge request GNOME/gtk!3739


Trivial merge