Disclosure for full screen overlay mobile menu – prevent behind overlay content scroll

[therealgilles]

I'm trying to use the Disclosure component to create a full-screen overlay mobile menu. To disable scrolling on the content behind the overlay, I need to set 'overflow: hidden' on the body tag when the menu is open and remove it when the menu is closed.

I do not see any callback functions that would easily allow me to do this. Any ideas or suggestions?