Radio: Add form primitive to @wordpress/ui

[shail-mehta]

Part of #74178

What?

Adds a Radio form primitive to @wordpress/ui.

Why?

The design system needs a styled radio primitive.

How?

Add the Radio primitive as a thin wrapper around Base UI’s Radio.

Testing Instructions

• Run Storybook and open Design System / Components / Form / Primitives / Radio.
• Check the Default, Checked, Disabled, and Disabled Checked stories.
• Toggle WordPress global CSS in the Storybook toolbar and confirm the component still looks correct.

Use of AI Tools

• Yes

[github-actions]

Size Change: 0 B

Total Size: 7.75 MB

_{compressed-size-action}

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

If you're merging code through a pull request on GitHub, copy and paste the following into the bottom of the merge commit message.

Co-authored-by: shail-mehta <shailu25@git.wordpress.org>
Co-authored-by: ciampo <mciampini@git.wordpress.org>

To understand the WordPress project's expectations around crediting contributors, please review the Contributor Attribution page in the Core Handbook.

[ciampo]

@shail-mehta Note that the original issue #74178 is assigned to @mirka .

I'll wait for @mirka 's confirmation, but I assume she has plans and ideas on how to impement the component. Let's coordinate before jumping into implementation / review

[shail-mehta]

I just noticed that the original issue was already assigned to @mirka, I wasn’t aware of that earlier. I’ll close this PR.