Hide the "Details" link of commit status when the user cannot access actions (#30156)

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" />

routers/web/repo/branch.go

@@ -70,6 +70,11 @@ func Branches(ctx *context.Context) {
 		ctx.ServerError("LoadBranches", err)
 		return
 	}
+	if !ctx.Repo.CanRead(unit.TypeActions) {
+		for key := range commitStatuses {
+			git_model.CommitStatusesHideActionsURL(ctx, commitStatuses[key])
+		}
+	}
 
 	commitStatus := make(map[string]*git_model.CommitStatus)
 	for commitID, cs := range commitStatuses {