history: Always handle --columns=help
history: Always handle --columns=help

The test for --columns was failing in ci because flatpak
gets built without libsystemd there. Avoid this by always
handling --columns=help nicely, even if libsystemd is not
used.

Closes: #2244
Approved by: alexlarsson

matthiasclasen/flatpak,flatpak/flatpak,matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak,matthiasclasen/flatpak