Use for-of instead of forEach (#3583)

Co-authored-by: syuilo <syuilotan@yahoo.co.jp>
Co-authored-by: Acid Chicken (硫酸鶏) <root@acid-chicken.com>

src/client/app/desktop/views/pages/deck/deck.column.vue

@@ -224,7 +224,9 @@ export default Vue.extend({
 
 			if (this.menu) {
 				items.unshift(null);
-				this.menu.reverse().forEach(i => items.unshift(i));
+				for (const i of this.menu.reverse()) {
+					items.unshift(i);
+				}
 			}
 
 			return items;