fix(frontend/pageMetadata): ページタイトルが更新されない問題 (#13289)

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

packages/frontend/src/pages/gallery/edit.vue

@@ -122,11 +122,8 @@ const headerActions = computed(() => []);
 
 const headerTabs = computed(() => []);
 
-definePageMetadata(computed(() => props.postId ? {
-	title: i18n.ts.edit,
-	icon: 'ti ti-pencil',
-} : {
-	title: i18n.ts.postToGallery,
+definePageMetadata(() => ({
+	title: props.postId ? i18n.ts.edit : i18n.ts.postToGallery,
 	icon: 'ti ti-pencil',
 }));
 </script>

packages/frontend/src/pages/gallery/index.vue

@@ -119,10 +119,10 @@ const headerTabs = computed(() => [{
 	icon: 'ti ti-edit',
 }]);
 
-definePageMetadata({
+definePageMetadata(() => ({
 	title: i18n.ts.gallery,
 	icon: 'ti ti-icons',
-});
+}));
 </script>
 
 <style lang="scss" module>

packages/frontend/src/pages/gallery/post.vue

@@ -163,10 +163,12 @@ const headerActions = computed(() => [{
 
 const headerTabs = computed(() => []);
 
-definePageMetadata(computed(() => post.value ? {
-	title: post.value.title,
-	avatar: post.value.user,
-} : null));
+definePageMetadata(() => ({
+	title: post.value ? post.value.title : i18n.ts.gallery,
+	...post.value ? {
+		avatar: post.value.user,
+	} : {},
+}));
 </script>
 
 <style lang="scss" scoped>