修改产品结构树，修改审签功能

lyh

2025-04-02 0990dd4a4a52a6d26ff4d640980206fbff392dfb

 lxzn-module-eam/src/main/java/org/jeecg/modules/eam/service/impl/EamMaintenanceStandardServiceImpl.java

@@ -143,7 +143,7 @@
        queryWrapper.orderByDesc(EamMaintenanceStandard::getStandardVersion);

        List<EamMaintenanceStandard> list = eamMaintenanceStandardMapper.selectList(queryWrapper);
        if(CollectionUtil.isNotEmpty(list)) {
        if(CollectionUtil.isEmpty(list)) {
            return null;
        }
        return list.get(0);