fix(client): fix glitch when attach/detach avatar decoration

packages/frontend/src/pages/settings/profile.avatar-decoration-dialog.vue

@@ -77,19 +77,21 @@ async function attach() {
 		angle: angle.value,
 		flipH: flipH.value,
 	};
+	const update = [...$i.avatarDecorations, decoration];
 	await os.apiWithDialog('i/update', {
-		avatarDecorations: [...$i.avatarDecorations, decoration],
+		avatarDecorations: update,
 	});
-	$i.avatarDecorations = [...$i.avatarDecorations, decoration];
+	$i.avatarDecorations = update;
 
 	dialog.value.close();
 }
 
 async function detach() {
+	const update = $i.avatarDecorations.filter(x => x.id !== props.decoration.id);
 	await os.apiWithDialog('i/update', {
-		avatarDecorations: $i.avatarDecorations.filter(x => x.id !== props.decoration.id),
+		avatarDecorations: update,
 	});
-	$i.avatarDecorations = $i.avatarDecorations.filter(x => x.id !== props.decoration.id);
+	$i.avatarDecorations = update;
 
 	dialog.value.close();
 }