First batch of fixing tests to use best practices. (#11964)

packages/cli/src/ui/hooks/useToolScheduler.test.ts

@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/** @vitest-environment jsdom */
+
 /* eslint-disable @typescript-eslint/no-explicit-any */
 import type { Mock } from 'vitest';
 import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';