Problems starting swayosd-libinput-backend.service for users without gdm

[punk-dev-robot]

swayosd-libinput-backend.service was not starting for me, and after some investigaton i think it's because it specifying graphical.target in PartOf, After and WantedBy fields in the systemd unit file.

graphical.target is usually a default target for users of graphical logins, and users running composer from shell have default target set to multi-user.target.

I had to change graphical.target to default.target to make it work. I think default.target could work for everyone.