Fix node 18.16.0 tests

issue due to nodejs/node#47563

Change-type: patch

scripts/setupTests.ts

@@ -17,9 +17,12 @@ function copyProps(src: object, target: Record<string, any>) {
 	);
 }
 
-// @ts-expect-error
-global.window = $window;
-global.document = $window.document;
+global = {
+	...global,
+	// @ts-expect-error
+	window: $window,
+	document: $window.document,
+};
 
 // See https://github.com/jsdom/jsdom/issues/3002 why we need to mock this.
 global.document.createRange = () => {

src/components/Notifications/spec.tsx

@@ -94,24 +94,21 @@ describe('Notifications component', () => {
 		expect(callback.callCount).toEqual(1);
 	});
 
-	it('disappears after the duration passes', () => {
+	it('disappears after the duration passes', async () => {
 		const component = mount(
 			<NotificationsComponent
 				content={{ content: 'A notification', duration: 20 }}
 			/>,
 		);
-		const clock = sinon.useFakeTimers();
 
 		component.find('button').first().simulate('click');
 
 		// On the first transitionend (on entry), it creates the timer, and on the second one (on exit), it removes the element from the DOM.
 		component.find('.rnc__notification-item').first().simulate('transitionend');
-		clock.tick(200);
+		await new Promise((r) => setTimeout(r, 200));
 		component.find('.rnc__notification-item').first().simulate('transitionend');
 
 		expect(component.find('.rnc__notification-item')).toHaveLength(0);
-
-		clock.restore();
 	});
 
 	it('displays notifications in the expected position', () => {