lib-storage: Allow calling mailbox_get_private_flags_mask() without mailbox being open. Most importantly used by mailbox list indexes to determine if it can optimize a STATUS (UNSEEN) call.
lib-storage: Allow calling mailbox_get_private_flags_mask() without mailbox being open.
Most importantly used by mailbox list indexes to determine if it can
optimize a STATUS (UNSEEN) call.

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