fix(测试跟踪): 不覆盖模式导入已存在缺陷有误

--bug=1021892 --user=宋昌昌 【测试跟踪】缺陷管理-导入-不覆盖-导入失败，提示不合法的缺陷 https://www.tapd.cn/55049933/s/1326303

test-track/backend/src/main/java/io/metersphere/excel/domain/IssueExcelData.java

@@ -48,6 +48,8 @@ public class IssueExcelData implements Serializable {
     @ExcelIgnore
     private Boolean addFlag;
     @ExcelIgnore
+    private Boolean updateFlag = true;
+    @ExcelIgnore
     private String title;
     @ExcelIgnore
     private String description;

test-track/backend/src/main/java/io/metersphere/excel/listener/IssueExcelListener.java

@@ -121,6 +121,12 @@ public class IssueExcelListener extends AnalysisEventListener<Map<Integer, Strin
                         issueExcelData.setId(issues.getId());
                         issueExcelData.setAddFlag(Boolean.FALSE);
                         updateList.add(issueExcelData);
+                    } else {
+                        // 不覆盖模式
+                        issueExcelData.setId(issues.getId());
+                        issueExcelData.setAddFlag(Boolean.FALSE);
+                        issueExcelData.setUpdateFlag(Boolean.FALSE);
+                        updateList.add(issueExcelData);
                     }
                 }
             }
@@ -148,7 +154,7 @@ public class IssueExcelListener extends AnalysisEventListener<Map<Integer, Strin
         }
 
         if (CollectionUtils.isNotEmpty(updateList)) {
-            List<IssuesUpdateRequest> issues = updateList.stream().map(this::convertToIssue).collect(Collectors.toList());
+            List<IssuesUpdateRequest> issues = updateList.stream().filter(IssueExcelData::getUpdateFlag).map(this::convertToIssue).collect(Collectors.toList());
             issuesService.updateImportData(issues);
         }
     }