* add internal `Frozen` component and `useFrozenData` hook
* implement frozen state for the `Combobox` component
When the `Combobox` is in a closed state, but still visible (aka
transitioning out), then we want to freeze the `children` of the
`ComboboxOptions`. This way we still look at the old list while
transitioning out and you can safely reset any `state` that filters the
options in the `onClose` callback.
Note: we want to only freeze the children of the `ComboboxOptions`, not
the `ComboboxOptions` itself because we are still applying the necessary
data attributes to make the transition happen.
Similarly, if you are using the `virtual` prop, then we only freeze the
`virtual.options` and render the _old_ list while transitioning out.
* use `useFrozenData` in `Listbox` component
* use `data-*` attributes and `transition` prop to simplify playgrounds
* update changelog
* improve comment
* simplify frozen conditions
* use existing variable for frozen state
Robin Malfait
1c3f9a6230