Add aria-describedby to improve accessibility

Editor assessment

The subject states the fix and its purpose together: aria-describedby was added to the radio to improve accessibility. The radio scope is a proper component noun, the fix type matches, and both the mechanism and the motivation are in the headline, so no body is required and none is present. The attribute name makes the change verifiable at a glance. No footers appear. The lowercase imperative phrasing is clean. A compact, well-motivated accessibility fix that fully explains itself without the diff.