Feature request: RadioGroup disabled state

[mikestecker]

I see there is a disabled prop for RadioGroup in the React version, however it doesn't do anything. Can you add this feature?

[henribru]

It would be great to have working disabled props for all the input components. Currently there's one for Listbox and ListboxOption, but not RadioGroupOption and Switch. In #112 it was mentioned that it would be good to be consistent on this point, which I definitely agree with.

Edit: Seems we're getting one for the radio components! #401

[Cherry]

I'd love to see a consistent disabled property across all of these components too. Switch in particular is the key one we're missing today.