* add tests to guarantee `FocusTrap` with a single element works as expected
* it should keep the focus in the Dialog
Even if there is only 1 element. We were skipping the current active
element so the container didn't have any elements anymore and just
continued to the next focusable element in line. This will prevent that
and ensure that we can only skip elements if there are multiple ones.
* update changelog
Robin Malfait
dbcfb23bc3