Add context.Context to more methods (#21546)

This PR adds a context parameter to a bunch of methods. Some helper
`xxxCtx()` methods got replaced with the normal name now.

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

services/user/user.go

@@ -78,7 +78,7 @@ func DeleteUser(ctx context.Context, u *user_model.User, purge bool) error {
 				Actor:   u,
 			})
 			if err != nil {
-				return fmt.Errorf("SearchRepositoryByName: %w", err)
+				return fmt.Errorf("GetUserRepositories: %w", err)
 			}
 			if len(repos) == 0 {
 				break