* delay initialization of Dialog
We were using a useLayoutEffect, now let's use a useEffect instead. It
still moves focus to the correct element, but that process is now a bit
delayed. This means that users will less-likely be urged to "hack"
around the issue by using fake focusable elements which will result in
worse accessibility.
* add hook to deal with server handoff
This will allow us to delay certain features. For example we can delay
the focus trapping until it is fully hydrated. We can also delay
rendering the Portal to ensure hydration works correctly.
* use server handoff complete hook
* update changelog
Robin Malfait
c13e6b7752