Backport #27915 by @KN4CK3R
Fixes#27819
We have support for two factor logins with the normal web login and with
basic auth. For basic auth the two factor check was implemented at three
different places and you need to know that this check is necessary. This
PR moves the check into the basic auth itself.
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
