* improve TypeScript types for `Fieldset` component
* use `fieldset` instead of `div` by default
* only apply `role="group"` when not using a native `fieldset`
* apply `disabled` attribute
This is necessary if we want to make use of the default fieldset tag
(which also disables native form elements)
* adjust tests reflecting new changes
* conditionally apply props based on rendered element
* add `useResolvedTag` hook
This allows us to compute the `tag` name of a component. We can use a
shortcut based on the `props.as` and/or the `DEFAULT_XXX_TAG` of a
component. If this is not known/passed, then we compute it based on the
`ref` instead which requires an actual re-render.
* use `useResolvedTag` hook
* reflect change in `Field` related test
* update changelog
* inline variable
Robin Malfait
f740050c2a