[libadwaita] (7 commits) Non-fast-forward update to branch wip/exalm/flat-switcher

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/flat-switcher' 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:

  2956cfe... stylesheet: fix solid-csd style
  df8d4e8... demo: Specify .list-button explicitly
  07fc970... stylesheet: Stop styling buttons inside lists
  1aa5432... stylesheet: Rename .list-button to .outline
  09c0058... stylesheet: Special case colors for all flat buttons in hea
  0cfa341... view-switcher: Use .flat buttons

Commits added to the branch:

  c8cb941... demo: Specify .list-button explicitly (*)
  2ec30ee... stylesheet: Stop styling buttons inside lists (*)
  7b32a37... stylesheet: Rename .list-button to .outline (*)
  f9312f9... carousel: Add the allow-scroll-wheel prop (*)
  cb93f40... demo: Demo AdwCarousel:allow-scroll-wheel (*)
  045032b... stylesheet: Special case colors for all flat buttons in hea
  4a24f30... view-switcher: Use .flat buttons

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