fix: BUG#23562 换流变排油阀状态及排空时间，重点装备分类字段为空时，换流变排油阀状态及排空时间的SQL查询报错

amos-boot-module/amos-boot-module-biz/amos-boot-module-equip-biz/src/main/java/com/yeejoin/equipmanage/service/impl/FireFightingSystemServiceImpl.java

@@ -2950,6 +2950,9 @@ public class FireFightingSystemServiceImpl extends ServiceImpl<FireFightingSyste
             strings.addAll(Arrays.asList(equipIds.split(",")));
         });
         List<String> collect = strings.stream().distinct().collect(Collectors.toList());
+        if (CollUtil.isEmpty(collect)) {
+            return Collections.emptyList();
+        }
         List<Map<String, Object>> equipIndexList = this.baseMapper.getEquipIndexList(collect);
         Map<String, Map<String, Object>> equipmentSpecificId = equipIndexList.stream().collect(Collectors.toMap(item -> item.get("equipmentSpecificId").toString(), item -> item));
         List<Map<String, Object>> resultList = new ArrayList<>();