Fix#26685
If a commit status comes from Gitea Actions and the user cannot access
the repo's actions unit (the user does not have the permission or the
actions unit is disabled), a 404 page will occur after clicking the
"Details" link. We should hide the "Details" link in this case.
<img
src="https://github.com/go-gitea/gitea/assets/15528715/68361714-b784-4bb5-baab-efde4221f466"
width="400px" />
(cherry picked from commit 7dec8de9147b20c014d68bb1020afe28a263b95a)
Conflicts:
routers/web/repo/commit.go
trivial context commit