32a454f917
The two extensions currently use a slightly different label
in menu mode:
The workspace indicator uses the plain workspace number ("2"),
while the window list includes the number of workspaces ("2 / 4").
The additional information seem useful, as well as the slightly
bigger click/touch target, so copy the window-list behavior.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/307>