feat: 重构内容和订单列表接口，使用过滤器结构体简化参数传递；更新相关服务和测试用例

backend/app/services/content_test.go

@@ -66,8 +66,9 @@ func (s *ContentTestSuite) Test_List() {
 		models.ContentQuery.WithContext(ctx).Create(c1, c2)
 
 		Convey("should list only published contents", func() {
+			tid := "1"
 			filter := &content_dto.ContentListFilter{
-				TenantID: "1",
+				TenantID: &tid,
 				Pagination: requests.Pagination{
 					Page:  1,
 					Limit: 10,