fix: headerActionにPC以外で空のボタンが出てしまうバグの修正 (#12202)

* headerActionにPC以外で空のボタンが出てしまうバグの修正

* fix eslint

packages/frontend/src/pages/timeline.vue

@@ -140,15 +140,9 @@ function focus(): void {
 	tlComponent.focus();
 }
 
-const headerActions = $computed(() => [
-	...[deviceKind === 'desktop' ? {
-		icon: 'ti ti-refresh',
-		text: i18n.ts.reload,
-		handler: (ev) => {
-			console.log('called');
-			tlComponent.reloadTimeline();
-		},
-	} : {}], {
+const headerActions = $computed(() => {
+	const tmp = [
+		{
 			icon: 'ti ti-dots',
 			text: i18n.ts.options,
 			handler: (ev) => {
@@ -168,8 +162,20 @@ const headerActions = $computed(() => [
 					ref: $$(onlyFiles),
 				}], ev.currentTarget ?? ev.target);
 			},
+		},
+	];
+	if (deviceKind === 'desktop') {
+		tmp.unshift({
+			icon: 'ti ti-refresh',
+			text: i18n.ts.reload,
+			handler: (ev: Event) => {
+				console.log('called');
+				tlComponent.reloadTimeline();
+			},
+		});
 	}
-]);
+	return tmp;
+});
 
 const headerTabs = $computed(() => [...(defaultStore.reactiveState.pinnedUserLists.value.map(l => ({
 	key: 'list:' + l.id,