[xdg-desktop-portal-gnome] (4 commits) Non-fast-forward update to branch wip/exalm/polish

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/polish' 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:

  3f95c7d... wallpaper: Set dark wallpaper as well
  5b2ac46... screenshotdialog: Use the heading style class
  bfc5d62... screenshot: Refine screenshot display
  785c1b6... wallpaperpreview: Remove unused lockscreen styles
  45b717d... wallpaperpreview: Remove .frame

Commits added to the branch:

  ecc3e8f... screenshotdialog: Use the heading style class
  c7e027d... screenshot: Refine screenshot display
  505830c... wallpaperpreview: Remove unused lockscreen styles
  8e48064... wallpaperpreview: Remove .frame