If transaction log contains records with unknown types, log an error instead of assert-crashing.
If transaction log contains records with unknown types, log an error instead
of assert-crashing.

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