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/my-antennas/edit.vue

@@ -36,8 +36,8 @@ misskeyApi('antennas/show', { antennaId: props.antennaId }).then((antennaRespons
 	antenna.value = antennaResponse;
 });
 
-definePageMetadata({
+definePageMetadata(() => ({
 	title: i18n.ts.manageAntennas,
 	icon: 'ti ti-antenna',
-});
+}));
 </script>