bpo-38956: don't print BooleanOptionalAction's default twice (GH-27672)


Co-authored-by: Micky Yun Chan <michan@redhat.com>
(cherry picked from commit 1512bc21d60f098a9e9f37b44a2f6a9b49a3fd4f)

Co-authored-by: Maximilian Hils <git@maximilianhils.com>
3 files changed