[gtkmm] (7 commits) Non-fast-forward update to branch wip/dboles/rgba-set_hsv-360-4

[Daniel Boles <dboles src gnome org>]

The branch 'wip/dboles/rgba-set_hsv-360-4' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  ae72b5c... RGBA.set_hsv(): Properly interpret hue 360° as red

Commits added to the branch:

  ff3e8dc... tests/builder: Drop .ui properties gone in GTK 4 (*)
  8145663... Builder: Properly qualify static member function (*)
  ef4b555... Builder: Use refBuilder-> not refXml-> in examples (*)
  a8bb760... Builder: Document get_widget_derived() builder arg (*)
  495cc8d... Builder: Fix wrong use of @retval for output args: (*)
  7d6d482... Merge branch 'wip/dboles/builder-retval-4' into 'master' (*)
  02bc69b... RGBA.set_hsv(): Properly interpret hue 360° as red

(*) This commit already existed in another branch; no separate mail sent