Revert "v38: Move Banner to main export (#6720)"

[joshblack]

This reverts commit 0466819.

When going through the release, it seems like this change has usage in dotcom that needs to be updated before we can remove these components from the @primer/react/experimental entrypoint 👀

[changeset-bot]

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Latest commit: eecd244

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[Copilot]

Pull Request Overview

This PR reverts the move of the Banner component from the experimental exports to the main public API. The Banner component is being moved back to @primer/react/experimental because it has existing usage in dotcom that needs to be updated before it can be removed from the experimental entrypoint.

Key Changes:

• Reverts Banner component from main exports back to experimental exports
• Updates all Banner import references throughout the codebase
• Modifies Storybook story titles to reflect experimental status

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/react/src/index.ts	Removes Banner and BannerProps exports from main package
packages/react/src/experimental/index.ts	Re-adds Banner and BannerProps exports to experimental package
packages/react/src/tests/snapshots/exports.test.ts.snap	Updates test snapshots to reflect new export structure
packages/react/src/Button/Button.examples.stories.tsx	Updates Banner import to use experimental path
packages/react/src/Banner/Banner.stories.tsx	Changes story title to experimental namespace
packages/react/src/Banner/Banner.figma.tsx	Updates Banner import to use experimental path
packages/react/src/Banner/Banner.features.stories.tsx	Changes story title to experimental namespace
packages/react/src/Banner/Banner.examples.stories.tsx	Changes story title to experimental namespace
packages/react/src/Banner/Banner.docs.json	Updates import path and story IDs to experimental
e2e/components/Banner.test.ts	Updates all story IDs to experimental namespace
.changeset/fast-countries-remain.md	Empty changeset file

[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!

[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	87.33 KB (-0.86% 🔽)
packages/react/dist/browser.umd.js	87.39 KB (-0.84% 🔽)

[llastflowers]

✅