style: format engagement test file

Fix biome formatting for mock chain.

Co-Authored-By: Claude Opus 4.5 <[email protected]>

tests/twitter-client.engagement.test.ts

@@ -69,9 +69,7 @@ describe('TwitterClient engagement', () => {
     });
 
     it('retries on 404 with refreshed query IDs', async () => {
-      mockFetch
-        .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'Not found' })
-        .mockResolvedValueOnce({
+      mockFetch.mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'Not found' }).mockResolvedValueOnce({
         ok: true,
         status: 200,
         json: async () => ({ data: { favorite_tweet: 'Done' } }),