Fix missing import in ide integration tests. (#6407)

integration-tests/ide-client.test.ts

@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
 import * as fs from 'node:fs';
 import * as os from 'node:os';
 import * as path from 'node:path';