[gnome-shell] (23 commits) Non-fast-forward update to branch wip/fmuellner/gtk4

[Florian Müllner <fmuellner src gnome org>]

The branch 'wip/fmuellner/gtk4' 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:

  4b4bbee... shew: Use Xlib to set transient hint
  933ac4c... extensions-app: Remove stray angle brackets
  b6dcfa7... extensions-app: Set title on window instead of headerbar
  3f6fd73... extensions-app: Use consistent style for property names
  4cef6d6... extensions-app: Don't use deprecated margin-left/right prop
  382866e... extensions-app: Stop using :margin shortcut
  943a437... dbusServices/extensions: Minor cleanup
  6d560a2... dbusServices/extensions: Set title on window instead of hea
  4f06337... dbusServices/extensions: Use consistent style for property 
  a135114... dbusServices/extensions: Stop using :margin shortcut
  020ebaf... dbusServices/extensions: Stop using GtkContainer API
  9f9ea5c... dbusServices/extensions: Stop using GtkToolbar
  4c546f7... dbusServices/extensions: Stop stacking frames
  1043351... dbusServices/extensions: Remove event box
  3f9b488... Port extensions app and portal to GTK4

Commits added to the branch:

  2e976cd... ci: Generate junit report if project doesn't enable the reg (*)
  408c922... ci: Fix check-commit-log test failure count (*)
  1fbf62f... ci: Use the CI image produced by the pipeline (*)
  e81cab5... ci: Update mutter image (*)
  1aa7a23... ci: Use ci-fairy image for commit log check (*)
  250bab0... ci: Check that merge requests have the right settings (*)
  98c553f... shew: Use Xlib to set transient hint
  bb348c9... extensions-app: Remove stray angle brackets
  dd12838... extensions-app: Set title on window instead of headerbar
  99b5fa8... extensions-app: Use consistent style for property names
  c741d23... extensions-app: Don't use deprecated margin-left/right prop
  a2b9e90... extensions-app: Stop using :margin shortcut
  de3e913... extensions-app: Don't keep ref to main window
  992f729... extensions-app: Clean up when window is unrealized
  e41b34a... dbusServices/extensions: Minor cleanup
  fc35d9e... dbusServices/extensions: Set title on window instead of hea
  6892264... dbusServices/extensions: Use consistent style for property 
  9619d82... dbusServices/extensions: Stop using :margin shortcut
  3de1d00... dbusServices/extensions: Stop using GtkContainer API
  e9bdd45... dbusServices/extensions: Stop using GtkToolbar
  83cc52b... dbusServices/extensions: Stop stacking frames
  4b1a1b8... dbusServices/extensions: Remove event box
  7108a74... Port extensions app and portal to GTK4

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