agent: Fix status output for LISTTRUSTED.
* agent/trustlist.c (istrusted_internal): When LISTMODE is enabled, TRUSTLISTFPR status output should be done.
- GnuPG-bug-id: T7363
- Fixes-commit: 4fa82eec43e8d205fa336113f6ea554923fd6986
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>