More refactoring of db.DefaultContext (#27083)

Next step of #27065

models/issues/comment.go

@@ -359,12 +359,12 @@ func (c *Comment) LoadPoster(ctx context.Context) (err error) {
 }
 
 // AfterDelete is invoked from XORM after the object is deleted.
-func (c *Comment) AfterDelete() {
+func (c *Comment) AfterDelete(ctx context.Context) {
 	if c.ID <= 0 {
 		return
 	}
 
-	_, err := repo_model.DeleteAttachmentsByComment(c.ID, true)
+	_, err := repo_model.DeleteAttachmentsByComment(ctx, c.ID, true)
 	if err != nil {
 		log.Info("Could not delete files for comment %d on issue #%d: %s", c.ID, c.IssueID, err)
 	}