[react-interactions] Mock touchend events should use empty array for 'touches' (#17589)

The 'touches' value should be an empty array rather than 'null'

Author: necolas

packages/react-interactions/events/src/dom/testing-library/domEvents.js

@@ -273,7 +273,7 @@ function createTouchEvent(type, payload) {
     },
   );
 
-  const activeTouches = type !== 'touchend' ? touches : null;
+  const activeTouches = type !== 'touchend' ? touches : [];
 
   return createEvent(type, {
     altKey,