fix leaking test

Author: slax57

packages/ra-core/src/controller/list/useListController.spec.tsx

@@ -7,6 +7,7 @@ import {
     screen,
     act,
 } from '@testing-library/react';
+import { onlineManager } from '@tanstack/react-query';
 import { testDataProvider } from '../../dataProvider';
 import { memoryStore } from '../../store';
 import { CoreAdminContext } from '../../core';
@@ -35,6 +36,10 @@ describe('useListController', () => {
         debounce: 200,
     };
 
+    beforeEach(() => {
+        onlineManager.setOnline(true);
+    });
+
     describe('queryOptions', () => {
         it('should accept custom client query options', async () => {
             jest.spyOn(console, 'error').mockImplementationOnce(() => {});