feature: 审批回调幂等性控制bug修改

dcuc-auth-model/src/main/java/com/dragoninfo/dcuc/auth/auth/entity/zerotrust/ApprovalResult.java

@@ -62,7 +62,7 @@ public class ApprovalResult extends BaseUpdateEntity implements IdEntity<String>
      * 是否已经回调处理
      * 0：没有  1：有
      */
-    private String callBack = "0";
+    private String callBack;
 
 
 }