9b13bf552a
For message/notification grouping by source we need more control over each single message therefore in a future commit the MessageListSection will contain all messages directly instead of having a separate section for different source (notifications and media). The lost NotificationSection and MediaSection will be readded in a future commit as well. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3012>