* ignore `Escape` when event got prevented
Some external libraries only use `event.preventDefault()` and not
`event.stopPropagation()`. This means that the Dialog can still receive
an `Escape` keydown event which closes the Dialog.
We can also think about the `Escape` behaviour inside the modal as the
"default behaviour" once the Dialog is open. Therefore, we can also
check the `event.defaultPrevented` and ignore this event when this is
the case.
* update changelog
Robin Malfait
c494fa36e9