Add new unlisted state scheme

[dstello]

What are you trying to accomplish?

Add new unlisted pull request state to State

Screenshots

Integration

List the issues that this change affects.

• closes https://github.com/github/pull-requests/issues/19319

Risk Assessment

• Low risk the change is small, highly observable, and easily rolled back.
• Medium risk changes that are isolated, reduced in scope or could impact few users. The change will not impact library availability.
• High risk changes are those that could impact customers and SLOs, low or no test coverage, low observability, or slow to rollback.

What approach did you choose and why?

Anything you want to highlight for special attention from reviewers?

Accessibility

• Fixes axe scan violation - This change fixes an existing axe scan violation.
• No new axe scan violation - This change does not introduce any new axe scan violations.
• New axe violation - This change introduces a new axe scan violation. Please describe why the violation cannot be resolved below.

Merge checklist

• Added/updated tests
• Added/updated documentation
• Added/updated previews (Lookbook)
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge

Take a look at the What we look for in reviews section of the contributing guidelines for more information on how we review PRs.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 6cca25d

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.

This PR includes no changesets

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[github-actions]

Uh oh! @dstello, at least one image you shared is missing helpful alt text. Check your pull request body to fix the following violations:

• Images should have meaningful alternative text (alt text) at line 5

Alt text is an invisible description that helps screen readers describe images to blind or low-vision users. If you are using markdown to display images, add your alt text inside the brackets of the markdown image.

Learn more about alt text at Basic writing and formatting syntax: images on GitHub Docs.

🤖 Beep boop! This comment was added automatically by github/accessibility-alt-text-bot.

[github-actions]

⚠️ Visual or ARIA snapshot differences found

Our visual and ARIA snapshot tests found UI differences. Please review the differences by viewing the files changed tab to ensure that the changes were intentional.

Review differences

[lesliecdubs]

Hi @dstello, thanks for the contribution 👋🏻 Is this still in progress? Please mark as "ready for review" when you're done and we'll get this in the queue for some 👀 s!

[dstello]

Hi @lesliecdubs 👋🏼 , I believe we are still holding for some final design approval cc @arisacoba