Clean up log messages (#30313)

`log.Xxx("%v")` is not ideal, this PR adds necessary context messages.
Remove some unnecessary logs.

Co-authored-by: Giteabot <teabot@gitea.io>

models/repo/issue.go

@@ -53,7 +53,7 @@ func (repo *Repository) IsDependenciesEnabled(ctx context.Context) bool {
 	var u *RepoUnit
 	var err error
 	if u, err = repo.GetUnit(ctx, unit.TypeIssues); err != nil {
-		log.Trace("%s", err)
+		log.Trace("IsDependenciesEnabled: %v", err)
 		return setting.Service.DefaultEnableDependencies
 	}
 	return u.IssuesConfig().EnableDependencies