Here are my own copies of the three files. I have not made any modifications to them, and I have not had any login problems since the update.
/etc/pam.d/system-login
#%PAM-1.0
auth required pam_shells.so
auth requisite pam_nologin.so
auth include system-auth
account required pam_access.so
account required pam_nologin.so
account include system-auth
password include system-auth
session optional pam_loginuid.so
session optional pam_keyinit.so force revoke
session include system-auth
session optional pam_motd.so motd=/etc/motd
session optional pam_mail.so dir=/var/spool/mail standard quiet
-session optional pam_systemd.so
session required pam_env.so user_readenv=1
/etc/pam.d/system-auth
#%PAM-1.0
auth required pam_faillock.so preauth
# Optionally use requisite above if you do not want to prompt for the password
# on locked accounts.
auth [success=2 default=ignore] pam_unix.so try_first_pass nullok
-auth [success=1 default=ignore] pam_systemd_home.so
auth [default=die] pam_faillock.so authfail
auth optional pam_permit.so
auth required pam_env.so
auth required pam_faillock.so authsucc
# If you drop the above call to pam_faillock.so the lock will be done also
# on non-consecutive authentication failures.
-account [success=1 default=ignore] pam_systemd_home.so
account required pam_unix.so
account optional pam_permit.so
account required pam_time.so
-password [success=1 default=ignore] pam_systemd_home.so
password required pam_unix.so try_first_pass nullok shadow
password optional pam_permit.so
session required pam_limits.so
session required pam_unix.so
session optional pam_permit.so
/etc/pam.d/sddm-autologin
#%PAM-1.0
auth required pam_env.so
auth required pam_faillock.so preauth
auth required pam_shells.so
auth required pam_nologin.so
auth required pam_permit.so
-auth optional pam_gnome_keyring.so
-auth optional pam_kwallet5.so
account include system-local-login
password include system-local-login
session include system-local-login
-session optional pam_gnome_keyring.so auto_start
-session optional pam_kwallet5.so auto_start