Add Notice to SelectPanel

[hectahertz]

Closes https://github.com/github/primer/issues/4114

Changelog

New

Adds the notice prop to SelectPanel that renders an info/warning/error message to the user.

Rollout strategy

• Patch release
• Minor release
• Major release; if selected, include a written rollout or migration plan
• None; if selected, include a brief description as to why

Testing & Reviewing

Merge checklist

• Added/updated tests
• Added/updated documentation
• Added/updated previews (Storybook)
• Changes are SSR compatible
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge
• (GitHub staff only) Integration tests pass at github/github (Learn more about how to run integration tests)

[changeset-bot]

🦋 Changeset detected

Latest commit: 50319d6

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@primer/react	Minor

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Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

👋 Hi, this pull request contains changes to the source code that github/github depends on. If you are GitHub staff, we recommend testing these changes with github/github using the integration workflow. Thanks!

[Copilot]

Pull Request Overview

This PR introduces a new notice prop to the SelectPanel component to render an informational, warning, or error message along with respective icons.

• Adds a notice prop to SelectPanel with associated styling and icon mappings
• Updates the component stories and changeset documentation to demonstrate and track the new feature

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
packages/react/src/SelectPanel/SelectPanel.features.stories.tsx	Adds a new story "WithNotice" demonstrating the notice prop functionality
.changeset/slick-teams-check.md	Updates the changeset to reflect a minor release for the notice feature
packages/react/src/SelectPanel/SelectPanel.tsx	Implements the notice prop functionality within the SelectPanel component

Files not reviewed (1)

• packages/react/src/SelectPanel/SelectPanel.module.css: Language not supported

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[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	105.38 KB (+0.34% 🔺)
packages/react/dist/browser.umd.js	105.74 KB (+0.37% 🔺)

[francinelucca]

@emilybrick can we get design review on this? 🙏

[francinelucca]

It's looking so good! some minor details.
Also let's make sure we run integration tests 🙏

[emilybrick]

Visually LGTM. ✨

[francinelucca]

✨