test(browerTrigger): ensure touch events initialize correctly on touch enabled Chrome

On certain browsers (e.g. on desktop Chrome with touch-events enabled),
using the `initTouchEvent()` method (introduced in 06a9f0a) did not
correctly initialize the event, nor did the event get dispatched on
the target element.

Using the `Event` constructor and manually attaching a `TouchList`,
works around the issue (although not a proper fix).

Fixes #11471
Closes #11493