[libadwaita] (12 commits) Non-fast-forward update to branch wip/exalm/menu-checks

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/menu-checks' 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:

  20a6909... stylesheet: Fix menu check/radio/arrow states

Commits added to the branch:

  7ba992a... stylesheet: Tone down selected menu item style for dark (*)
  7f348a0... stylesheet: Refine .navigation-sidebar row styles (*)
  24b3c99... stylesheet: Remove redundant stack sidebar styles (*)
  8ce6fa0... stylesheet: Specificity bump for dropdowns (*)
  970b29a... stylesheet: Fix mix() usage in list.content styles (*)
  73502bf... stylesheet: Simplify list styles (*)
  85e848f... stylesheet: Remove blue from view selections (*)
  af9e543... stylesheet: Fix places sidebar dnd style (*)
  fb34e7f... stylesheet: Fix indentation in treeview styles (*)
  11c618a... stylesheet: Remove a treeview checkbutton special case (*)
  ce34580... stylesheet: Fix menu check/radio/arrow states
  0cdc29d... stylesheet: Simplify checks and radios

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