Some browser+OS combinations trigger `blur` on the version-selector before a click within the component. To mitigate this, an extra `pointerup` listener was attached but that didn't solve the problem for Safari 15.x. However, `delegatesFocus: true` makes the shadow host focusable and that helps work around this problem.
Fixes: #307
Signed-off-by: Miki <mehranb@amazon.com>
