fix(radio-button): support selection using the space key

[Splaktar]

PR Checklist

Please check that your PR fulfills the following requirements:

• The commit message follows our guidelines
• Tests for the changes have been added or this is not a bug fix / enhancement
• Docs have been added, updated, or were not required

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Enhancement
[ ] Documentation content changes
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

We don't currently select the current radio button when the space bar is clicked. This doesn't align with the WAI-ARIA recommendations for accessibility.

Issue Number:
Fixes #11960

What is the new behavior?

• support selection using the space key
• add an incrementSelection enum
• add JSDoc and improve types
• fix typos

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information