chore: parse response in tests (#796)

tests/trace.spec.ts

@@ -29,7 +29,9 @@ test('check that trace is saved', async ({ startClient, server, mcpMode }, testI
   expect(await client.callTool({
     name: 'browser_navigate',
     arguments: { url: server.HELLO_WORLD },
-  })).toContainTextContent(`Navigate to http://localhost`);
+  })).toHaveResponse({
+    code: expect.stringContaining(`page.goto('http://localhost`),
+  });
 
   expect(fs.existsSync(path.join(outputDir, 'traces', 'trace.trace'))).toBeTruthy();
 });