Simplify @testing-library/jest-dom config

Author: wojtekmaj

packages/react-date-picker/vitest.setup.ts

@@ -1,10 +1,8 @@
-import { expect, afterEach } from 'vitest';
+import { afterEach } from 'vitest';
 import { cleanup } from '@testing-library/react';
-import matchers from '@testing-library/jest-dom/matchers';
+import '@testing-library/jest-dom/vitest';
 import 'vitest-canvas-mock';
 
-expect.extend(matchers);
-
 afterEach(() => {
   cleanup();
 });