Use ctx instead of db.DefaultContext in some packages(routers/services/modules) (#19163)

* Remove `db.DefaultContext` usage in routers, use `ctx` directly

* Use `ctx` directly if there is one, remove some `db.DefaultContext` in `services`

* Use ctx instead of db.DefaultContext for `cmd` and some `modules` packages

* fix incorrect context usage

modules/doctor/checkOldArchives.go

@@ -17,7 +17,7 @@ import (
 func checkOldArchives(ctx context.Context, logger log.Logger, autofix bool) error {
 	numRepos := 0
 	numReposUpdated := 0
-	err := iterateRepositories(func(repo *repo_model.Repository) error {
+	err := iterateRepositories(ctx, func(repo *repo_model.Repository) error {
 		if repo.IsEmpty {
 			return nil
 		}