Delay Before Popover Disappears (especially for cascading menus)

[cmdcolin]

Currently, if you mouseover outside of a cascading menu for just a brief second, it closes the menu. It might be desirable to keep the menu open though

This thread titled "Delay Before Popover Appears" is kind of the inverse of this question: how can we add a delay before the popover (and specifically, the level of cascading menu that you are at) disppears?

The comment #85 (comment) gives some leads that maintaing timers in refs is probably helpful. I thought specifically just debouncing the isOpen flag of the popover state would help but I think we have to maintain some timers with refs like in that comment