function onSwappableSwappedDefaultAnnouncement({dragEvent, swappedElement}) {
  const sourceText =
    dragEvent.source.textContent.trim() ||
    dragEvent.source.id ||
    'swappable element';
  const overText =
    swappedElement.textContent.trim() ||
    swappedElement.id ||
    'swappable element';

  return `Swapped ${sourceText} with ${overText}`;
}
Returns an announcement message when the Draggable element is swapped with another draggable element
@param {SwappableSwappedEvent} swappableEvent
@return {String}