raw storage: Don't set NAMESPACE_FLAG_INBOX_USER for the created namespace.
raw storage: Don't set NAMESPACE_FLAG_INBOX_USER for the created namespace.

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