Update single item PricingOptions layout

[danielguillan]

Summary

Resolves https://github.com/github/primer/issues/5465. Updates the layout of single item pricing options to stack the content vertically and center align on large viewports.

What should reviewers focus on?

• Ensure the layout and the spacing are correct in different viewport sizes (desktop, tablet and mobile).
• Verify that no design regressions have been introduced in the multiple item variants

Steps to test:

• Review Storybook stories

Supporting resources (related issues, external links, etc):

• Modification request: https://github.com/github/primer/issues/5465

Contributor checklist:

• All new and existing CI checks pass
• Tests prove that the feature works and covers both happy and unhappy paths
• Any drop in coverage, breaking changes or regressions have been documented above
• UI Changes contain new visual snapshots (generated by adding update snapshots label to the PR)
• All developer debugging and non-functional logging has been removed
• Related issues have been referenced in the PR description

Reviewer checklist:

• Check that pull request and proposed changes adhere to our contribution guidelines and code of conduct
• Check that tests prove the feature works and covers both happy and unhappy paths
• Check that there aren't other open Pull Requests for the same update/change

Screenshots:

Please try to provide before and after screenshots or videos

Before	After

[changeset-bot]

🦋 Changeset detected

Latest commit: 42fad6e

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

This PR includes changesets to release 8 packages

Name	Type
@primer/brand-primitives	Patch
@primer/react-brand	Patch
@primer/brand-docs	Patch
@primer/brand-css	Patch
@primer/brand-e2e	Patch
@primer/brand-fonts	Patch
@primer/brand-config	Patch
@primer/brand-storybook	Patch

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[github-actions]

🔍 Design token changes found

View CSS variable changes

+ --brand-PricingOptions-items1-container-paddingInline: var(--base-size-32);

[github-actions]

⚠️ Visual differences found

Our visual comparison tests found UI differences.

Please review the differences by using the test artifacts to ensure that the changes were intentional.

Artifacts can be downloaded and reviewed locally.

Download links are available at the bottom of the workflow summary screen.

Example:

If the changes are expected, please run npm run test:visual:update-snapshots to replace the previous fixtures.

Review visual differences

[Copilot]

Pull Request Overview

Updates the PricingOptions component layout to stack single item content vertically and center-align on large viewports, replacing the previous horizontal two-column layout. The changes simplify the CSS structure and improve the visual presentation for single pricing options.

• Removed complex single-item grid layout with horizontal columns
• Added vertical stacking with 50% width and center alignment for single items
• Updated story example to include feature list for better demonstration

Reviewed Changes

Copilot reviewed 4 out of 16 changed files in this pull request and generated no comments.

File	Description
PricingOptions.module.css	Removes horizontal grid layout for single items, adds vertical centering with 50% width
PricingOptions.features.stories.tsx	Moves OneOption story and adds FeatureList items for better visual testing
pricing-options.json	Adds new design token for single item container padding
bright-gifts-cheer.md	Documents the layout change in changelog

Comments suppressed due to low confidence (1)

packages/react/src/PricingOptions/PricingOptions.module.css:152

• The CSS custom property name uses inconsistent casing. It should be '--brand-pricing-options-items1-container-padding-inline' to match the established naming pattern used elsewhere in the file.

    --brand-pricing-options-container-padding-inline: var(--brand-PricingOptions-items1-container-padding-inline);

[rezrah]

@danielguillan FYI the docs example is broken for one pricing option.

I think this is related to a bug where the Doctocat stylesheet is interfering with our local one. I have a fix, which I'll try to land ASAP. Should fix this bug.

[simmonsjenna]

LGTM 👍

[rezrah]

🚀