fix: 测试计划性能测试用例order字段初始化报错

backend/src/main/java/io/metersphere/track/service/TestPlanLoadCaseService.java

@@ -471,7 +471,7 @@ public class TestPlanLoadCaseService {
     }
 
     public void initOrderField() {
-        ServiceUtils.initOrderField(TestPlanLoadCase.class, TestPlanLoadCaseMapper.class,
+        ServiceUtils.initOrderField(TestPlanLoadCaseWithBLOBs.class, TestPlanLoadCaseMapper.class,
                 extTestPlanLoadCaseMapper::selectPlanIds,
                 extTestPlanLoadCaseMapper::getIdsOrderByUpdateTime);
     }