chore(badge): add vrt support

[cdransf]

Description

Adds badge.vrt.ts and badge-custom-properties.vrt.ts under badge/test/vrt/: all semantic/non-semantic variants x size, outline, subtle, fixed positioning, icon anatomy, forced-colors, and all 17 custom properties.

Motivation and context

Extends the VRT foundation (button/link/divider/avatar) to Badge.

Related issue(s)

• fixes SWC-2397

Author's checklist

• I have read the CONTRIBUTING and PULL_REQUESTS documents.
• I have reviewed the Accessibility Practices for this feature.
• I have added automated tests to cover my changes.
• I have included a well-written changeset if my change needs to be published.
• I have included updated documentation if my change required it.

Accessibility testing checklist

• Keyboard: N/A — Badge is non-interactive and not focusable; no keyboard behavior to test.
• Screen reader: 1. Open Storybook → Badge → Badge VRT. 2. Confirm no console errors/warnings on load. 3. Spot-check one badge per variant row and the icon-only cases with a screen reader; expect label text (or aria-label for icon-only) announced, no extra noise.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 4d3c7de

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[rubencarvalho]

No strong opinion, but would it be worth it to also have at least one outline variant permutating its size?