[pricelist] fix copy object of state

src/plugins/pricelist/components/DrinkModify.vue

@@ -72,7 +72,8 @@ export default defineComponent({
   emits: { save: () => true, cancel: () => true },
   setup(props, { emit }) {
     onBeforeMount(() => {
-      edit_drink.value = Object.assign({}, props.drink);
+      edit_drink.value = <Drink>JSON.parse(JSON.stringify(props.drink));
+      console.log('edit_drink', edit_drink.value)
     });
 
     const edit_drink = ref<Drink>();