Replace Esc key listeners with a CloseWatcher in supported browsers

[lukewarlow]

Where it's supported HeadlessUI should use the new CloseWatcher API [1][2] instead of just an escap

This will allow elements such as dialogs and popovers to be closed by the Android back gesture / button (along with potential other close signals other than just escape on desktop)

Additional context
[1] https://html.spec.whatwg.org/multipage/interaction.html#the-closewatcher-interface
[2] https://developer.chrome.com/blog/new-in-chrome-120#close-watcher

[mordechaim]

This is a great new API and agree HealessUI should use it.

Until then I've rolled up my own useCloseWatcher hook to trigger my onClose callback.