FocusBracket = () => {
  return createElement('div', {
    role: 'none',
    tabIndex: 0,
    style: styles.focusBracket
  });
}
This Component is used to "wrap" the modal we're opening
so that changing focus via tab will never leave the document.

This allows us to properly trap the focus within a modal
even if the modal is at the start or end of a document.