优化dnc，设备结构树查询，优化原有代码

lyh

2025-04-11 2cf1565485060fd56e1f1f1cffbba7a4d70d42a6

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package org.jeecg.modules.eam.constant;
 
/**
 * 保养状态
 */
public enum EquipmentMaintenanceStatus {
    NORMAL,
    UNDER_MAINTENANCE,
    WAIT_CONFIRM,;
}