fix(service): 修复空列表处理避免空指针异常

buhuazhen

2026-04-22 252766e40f844145579317509cf5136a8e6d2de4

 src/main/java/com/ruoyi/collaborativeApproval/dto/SealApplicationManagementDTO.java

@@ -8,4 +8,7 @@
    private String createUserName;
    //所属部门
    private String department;

    //审批人
    private String approveUserName;
}