refactor: add mock clear

Author: John Doe

testing/test-setup/src/lib/process.setup-file.ts

@@ -3,11 +3,11 @@ import { afterEach, beforeEach, vi } from 'vitest';
 
 export const MOCK_PID = 10_001;
 
-let processMock = vi.spyOn(process, 'pid', 'get');
+const processMock = vi.spyOn(process, 'pid', 'get');
 beforeEach(() => {
   processMock.mockReturnValue(MOCK_PID);
 });
 
 afterEach(() => {
-  processMock.mockRestore();
+  processMock.mockClear();
 });