auth: Mention auth_worker_max_count in warning message about worker queue being slow.
auth: Mention auth_worker_max_count in warning message about worker queue being slow.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot