async function triggerFocusFor(element) {
  if (isIE()) {
    await nextFrame();
    await nextFrame();
  }
  element.focus();
  if (isIE()) {
    element.focus();
    await nextFrame();
    await nextFrame();
  }
}
Focuses the provided element and await time before and after it on IE.

Background info:
Adding an event and immediately trigger it fails in IE.
Also before checking the effects of a trigger IE needs some time.

@example
const el = await fixture('<input type="text" />');
await triggerFocusFor(el);
// el is now focused

@param {HTMLElement} element Element/Node to focus
@returns {Promise<void>} Promise to await until focus is done (for IE)