test(zone.js): fix zone.js test listener removal (angular#55017)

The test was checking the wrong set of listeners because of a typo.

PR Close angular#55017

packages/zone.js/test/browser/browser.spec.ts

@@ -2893,7 +2893,7 @@ describe('Zone', function() {
  button.addEventListener('click', listener4, true);
 
  button.removeAllListeners!('mouseover');
- const listeners = button.eventListeners!('mouseove');
+ const listeners = button.eventListeners!('mouseover');
  expect(listeners.length).toBe(0);
 
  const mouseEvent = document.createEvent('Event');