If prefix.INBOX has children and we're listing under prefix.%, don't drop the prefix.
If prefix.INBOX has children and we're listing under prefix.%, don't drop
the prefix.

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