082eedd968
Now that the backgrounds was moved into workspaces, the fullscreen views on secondary monitors are visually inconsistent with the primary view, as there's no dash or search entry that reduces the available height and allows adjacent workspaces to peek in. Address this by adding padding above and below the view, so that it is limited to 70% of the available height. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1735>