Fix adopt repository has empty object name in database (#31333)
Fix #31330
Fix #31311
A workaround to fix the old database is to update object_format_name to
`sha1` if it's empty or null.
(cherry picked from commit 1968c2222dcf47ebd1697afb4e79a81e74702d31)
With tests services/repository/adopt_test.go
