story#6071，选择小修车且只有一项数据时需清除原本的拖车服务类型

src/views/index/vehicleAdd.vue

@@ -525,7 +525,7 @@ export default {
         this.$toast('车辆类型不能为空')
         return
       }
-      if(this.selectedOption?.length==0 && this.selectedOption.includes(1)){//选择小修车时需清除原本的拖车服务类型
+      if(this.selectedOption?.length==1 && this.selectedOption.includes(1)){//选择小修车时需清除原本的拖车服务类型
         let data=this.oldSupplierServiceList.filter(item => item.name ==='拖车服务')
         this.serviceIds = this.serviceIds.filter(item => !data[0].children.some(obj => obj.id === item));
       }