AUI-1044 - Add option to prevent selecting all child nodes in radio a…

…nd task

https://issues.liferay.com/browse/AUI-1044
https://issues.liferay.com/browse/LPS-42204
https://in.liferay.com/web/global.engineering/forums/-/message_boards/message/1884586

Hey Jon,

I also updated the demo to reflect the changes.

Patrick