If `commitstatus_service.FindReposLastestCommitStatuses` receives no
repos in its params, short-circuit, and return early, without performing
any potentially expensive work.
Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>
(cherry picked from commit 33cd8446d3)
After repository commit status has been introduced on dashaboard, the
most top SQL comes from `GetLatestCommitStatusForPairs`.
This PR adds a cache for the repository's default branch's latest
combined commit status. When a new commit status updated, the cache will
be marked as invalid.
<img width="998" alt="image"
src="76759de7-3a83-4d54-8571-278f5422aed3">
(cherry picked from commit e308d25f1b2fe24b4735432b05e5e221879a2705)
