Include parent focus-trap element in trap

[AnselmHa]

Hi there, great job. I have a usecase that is maybe more common than known. I want to include the parent container to be included in the trap. So after the last element it would be good to have a config to enable to select the parent container. This is a request from business as they want that the dialog to be read by screen readers, so the user wiuth screen readers can again listen to the dialog text within the trap. I have solved it with a workaround, so no hurry. thx in advance.