[RadioGroup] Unselectable radio group item

[hpohlmeyer]

I am working on an option picker similar to a t-shirt size picker on a shop page. The radio group is the natural pick for that and works fine in most cases. The problem occurs is something is sold-out.

This sounds like a good case to use disabled, but marking a radio button disabled lets screen readers skip it. The group size would be properly announced, but you would never be able to read all options, meaning you never know if your size exists and is sold out or if it does not exist.

On way to fix that would be a radio item with aria-disabled but without disabled, which should be included in the navigation, but not be selectable. I tried to build that on top of the radix group, but it does not look like I can get access to the radio-context. Am I missing something, or is build that on top of the existing primitives impossible right now?