fix: 装备详情接口空指针处理

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

@@ -426,7 +426,7 @@ public class EquipmentDetailServiceImpl extends ServiceImpl<EquipmentDetailMappe
             for (FireFightingSystemEntity entity : sys) {
                 sb.append(entity.getName()).append(",");
             }
-            equipmentSpecific.setSystemName(Objects.isNull(sb.toString()) ? "" : sb.deleteCharAt(sb.lastIndexOf(",")).toString());
+            equipmentSpecific.setSystemName(sb.toString());
         }
         // 装备分类
         Equipment equipment = equipmentDetail.getEquipment();