test: waitFor dialog in `VideoConfPopups` unit test (#35141)

apps/meteor/client/views/room/contextualBar/VideoConference/VideoConfPopups/VideoConfPopups.spec.tsx

 import { mockAppRoot } from '@rocket.chat/mock-providers';
-import { render, screen } from '@testing-library/react';
+import { render, screen, waitFor } from '@testing-library/react';
 
 import VideoConfPopups from './VideoConfPopups';
 import { createFakeRoom } from '../../../../../../tests/mocks/data';
@@ -18,5 +18,6 @@ test('should render video conference incoming popup', async () => {
 			.build(),
 	});
 
-	expect(await screen.findByRole('dialog')).toBeInTheDocument();
+	await waitFor(() => screen.findByRole('dialog'));
+	expect(screen.getByRole('dialog')).toBeInTheDocument();
 });