fix: remove unused within import in orders test (TS strict)

frontend/src/test/orders.test.tsx

@@ -1,5 +1,5 @@
 import { describe, it, expect } from 'vitest';
-import { screen, waitFor, within } from '@testing-library/react';
+import { screen, waitFor } from '@testing-library/react';
 import userEvent from '@testing-library/user-event';
 import { HttpResponse, http } from 'msw';
 import { renderRoute } from './render';