feat:(feature/REQ-3581) 取消用印时，把合同id要清空掉

visa/visa-server/src/main/java/cn/axzo/nanopart/visa/server/service/impl/ChangeRecordServiceImpl.java

@@ -1850,6 +1850,11 @@ public class ChangeRecordServiceImpl extends ServiceImpl<ChangeRecordDao, Change
             result.setStampStatus(oldValue.nextStampStatus(req.getVisaStampAction()));
         }
 
+        // 取消用印默认把合同id清空掉，后续如果有多种case，可以默认就清空，使用流程编排重构进行扩展
+        if (Objects.equals(req.getVisaStampAction(), CANCEL)) {
+            result.setContractId("");
+        }
+
         return result;
     }