fix(测试跟踪): 同步TAPD缺陷创建时间字段有误

--bug=1018287 --user=宋昌昌 【测试跟踪】缺陷管理-同步tapd的创建时间字段不正确 https://www.tapd.cn/55049933/s/1265673

Co-authored-by: song-cc-rock <changchang.song@fit2cloud.com>

test-track/backend/src/main/java/io/metersphere/service/issue/platform/TapdPlatform.java

@@ -256,8 +256,8 @@ public class TapdPlatform extends AbstractIssuePlatform {
         issue.setCustomFields(syncIssueCustomField(issue.getCustomFields(), bug));
         issue.setPlatform(key);
         try {
-            issue.setCreateTime(DateUtils.getTimestamp((String) bug.get("created")));
-            issue.setUpdateTime(DateUtils.getTimestamp((String) bug.get("modified")));
+            issue.setCreateTime(DateUtils.getTime((String) bug.get("created")).getTime());
+            issue.setUpdateTime(DateUtils.getTime((String) bug.get("modified")).getTime());
         } catch (Exception e) {
             LogUtil.error(e);
         }