Tabs: expose active tab item props, use ariakit prop types

[ciampo]

What?

Extracted from #66097 (comment)

This PR adds 3 more props on the Tabs component: activeTabId, defaultActiveTabId and onActiveTabIdChange, and tweaks all prop types to use ariakit type defs under the hood

Why?

The new props are necessary to control, in some cases, which tab is the active composite item (see #66097 (comment)).

Updating the prop types align Tabs with other recent ariakit-based components, such as Composite and DropdownMenuV2.

How?

• Added new props
• Updated types and some JSDocs
• Updated README to match new JSDocs

Testing Instructions

Review the code and the README. No runtime changes.

[github-actions]

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Co-authored-by: ciampo <mciampini@git.wordpress.org>
Co-authored-by: tyxla <tyxla@git.wordpress.org>

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[tyxla]

LGTM 👍 🚀

Just left a few minor suggestions and questions.

[ciampo]

Thank you for the review, @tyxla ! All feedback address, will merge as soon as CI checks pass ✅

[github-actions]

Flaky tests detected in ed6be72.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/11403118754
📝 Reported issues:

• [Flaky Test] Redirection after template creation #60678 in /test/e2e/specs/site-editor/site-editor-url-navigation.spec.js