configs/releng/airootfs/etc/systemd/system/getty@tty1.service.d/autologin.conf: update ExecStart
Upstream getty@.service
's ExecStart
has changed over the years (1, 2, 3). Update the drop-in to more closely match getty@.service
of systemd 250.
Use the example from https://wiki.archlinux.org/title/getty#Virtual_console.