Replace @testing-library/jest-dom with built-in vitest browser assertions

config/test/setupTests.ts

@@ -1,9 +0,0 @@
-import '@testing-library/jest-dom/vitest';
-import { cleanup } from '@testing-library/react';
-import { afterEach } from 'vitest';
-
-// Clear all mocks and cleanup DOM after every test
-afterEach(() => {
-  vi.clearAllMocks();
-  cleanup();
-});