fix(接口测试): 修复批量删除api接口报sql异常的缺陷

--bug=1024917 --user=王孝刚 【接口测试】api-回收站- 全选批量删除报sql异常
https://www.tapd.cn/55049933/s/1356281

api-test/backend/src/main/java/io/metersphere/service/MockConfigService.java

@@ -682,14 +682,16 @@ public class MockConfigService {
         MockConfigExample configExample = new MockConfigExample();
         configExample.createCriteria().andApiIdIn(apiIds);
         List<MockConfig> mockConfigList = mockConfigMapper.selectByExample(configExample);
-        MockExpectConfigExample example = new MockExpectConfigExample();
         List<String> mockConfigIds = mockConfigList.stream().map(MockConfig::getId).toList();
+        if (CollectionUtils.isNotEmpty(mockConfigIds)) {
+            MockExpectConfigExample example = new MockExpectConfigExample();
             example.createCriteria().andMockConfigIdIn(mockConfigIds);
             List<MockExpectConfigWithBLOBs> deleteBlobs = mockExpectConfigMapper.selectByExampleWithBLOBs(example);
             for (MockExpectConfigWithBLOBs model : deleteBlobs) {
                 this.deleteMockExpectFiles(model);
             }
             mockExpectConfigMapper.deleteByExample(example);
+        }
         mockConfigMapper.deleteByExample(configExample);
     }