Box component should not accept onClick

[allobast]

As per Yammer thread: The component adds role="button" if that's set - but doesn't do any of the other stuff necessary to make it actually interactive - so it's basically not accessible when used stand-alone - still need to use Clickables for simple interactive components."

https://www.yammer.com/microsoft.com/#/Threads/show?threadId=1122316436