Component is not compatible with dialog element

[marcinburzynski]

Issue:
hCaptcha popup is hidden behind the dialog element

This is a real issue because the dialog element is already widely supported and we're going to see more and more modal implementations based on this element.
https://caniuse.com/?search=dialog

Expected behavior:
Either:
a) add a flag so that we can choose to render a captcha popup in a dialog
b) add a portalTarget prop so that we can pass element reference where popup should be rendered

[three-fourteen]

It doesn't seem to have a solution, but with the "dialog" element gaining wider support, a solution must be considered.