refactor(接口测试): 修复接口测试报告中如果最后出现未执行的步骤在组装报告时会报错的问题

修复接口测试报告中如果最后出现未执行的步骤在组装报告时会报错的问题

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

@@ -401,8 +401,13 @@ public class ApiScenarioReportStructureService {
             for (StepTreeDTO unListDTO : mergeList) {
                 int index = unListDTO.getIndex();
                 if (index > 0) {
+                    if (list.size() < (index - 1)) {
+                        list.add(unListDTO);
+                    } else {
                         list.add(index - 1, unListDTO);
                     }
+
+                }
             }
             for (int index = 0; index < list.size(); index++) {
                 list.get(index).setIndex((index + 1));