d interaction of a radio group nested in a toolbar is as follows.
          </p>
          <ul>
            <li>
              <kbd>Space</kbd>: If the focused radio button is not checked, unchecks the currently checked radio button and checks the focused radio button.
              Otherwise, does nothing.
            </li>
            <li>
              <kbd>Enter</kbd> (optional): If the focused radio button is not checked, unchecks the currently checked radio button and checks the focused radio button.
