[libadwaita] (19 commits) Non-fast-forward update to branch wip/exalm/borderless

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/borderless' 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:

  4d727cb... Revert "stylesheet: Use darker headerbar for focused window
  ccbd7e6... Revert "Revert "stylesheet: Restore a backdrop state for he
  fea7f5c... Revert "Revert "stylesheet: Add back a backdrop state for A
  72a4bab... Add AdwSplitButton
  16f22bd... stylesheet: Use toolbar style for header bars and action ba
  de3c4db... stylesheet: Make GtkWindowControls buttons filled
  2bc4dc4... stylesheet: Make image buttons square
  905c9f8... example

Commits added to the branch:

  3186aed... Add German translation (*)
  ac90b6d... view-stack: Make the name property not construct-only (*)
  9ace5b0... view-stack: Add missing EXPLICIT_NOTIFY to page properties (*)
  bf2e862... view-stack: Don't show duplicate name warnings for null nam (*)
  0642dbb... preferences-page: Add the 'name' property (*)
  8a43fd0... preferences-window: Add visible-child and visible-child-nam (*)
  edd7216... carousel: Fix crash when attempting to scroll on an empty c (*)
  a497ec3... indicator-bin: Free the shader in unrealize() instead of di (*)
  24455c0... fading-label: Free the shader in unrealize() instead of dis (*)
  4f495da... tab: Free the shader in unrealize() instead of dispose() (*)
  1354c22... Revert "stylesheet: Use darker headerbar for focused window
  dcd374b... Revert "Revert "stylesheet: Restore a backdrop state for he
  43e9287... Revert "Revert "stylesheet: Add back a backdrop state for A
  db8e0d9... Add AdwSplitButton
  94f191f... stylesheet: Use toolbar style for header bars and action ba
  92c3f3b... stylesheet: Reset toolbar styles for popovers
  c13b91a... stylesheet: Make GtkWindowControls buttons filled
  94f1fd6... stylesheet: Make image buttons square
  43c5d87... example

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