[gnome-shell] Non-fast-forward update to branch wip/snwh/notification-layout-rework

[Sam Hewitt <snwh src gnome org>]

The branch 'wip/snwh/notification-layout-rework' 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:

  856de0f... notifications: Rework notification layout to not rely on cs

Commits added to the branch:

  b647317... notifications: Rework notification layout to not rely on cs