Add descriptive labels to Footnote return links

[rezrah]

Summary

Towards https://github.com/github/accessibility-audits/issues/14513

Expands the aria-label in return links to include children, per the recommendation made in the a11y audit.

Resolves a sev-2 accessibility bug.

List of notable changes:

• added the item text to the aria-label
• updated tests
• added a changeset

What should reviewers focus on?

• Check that the aria-label includes the Footnote.Item text

Steps to test:

1. Go to this (or any) Footnote story
2. Inspect return icon link, and verify that the aria-label includes the adjacent text

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

• https://github.com/github/accessibility-audits/issues/14513

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: ddefceb

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

This PR includes changesets to release 7 packages

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

Not sure what this means? Click here to learn what changesets are.

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

[github-actions]

🟢 No design token changes found

[Copilot]

Pull request overview

This PR enhances the accessibility of Footnote return links by adding descriptive labels that include the footnote content. The change addresses a severity-2 accessibility issue identified in an audit, ensuring screen readers announce more context when reading the back links.

Key changes:

• Updated the aria-label attribute to include the footnote's text content alongside "Back to content"
• Modified the corresponding test to verify the new aria-label format
• Added a changeset documenting this accessibility improvement

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.

File	Description
packages/react/src/Footnotes/Footnotes.tsx	Modified aria-label to append children content to "Back to content"
packages/react/src/Footnotes/Footnotes.test.tsx	Updated test assertion to match new aria-label format and removed trailing space from test data
.changeset/lucky-socks-carry.md	Added changeset documenting the accessibility enhancement
package-lock.json	Version bumps across packages (0.60.1 → 0.61.0)

[github-actions]

🟢 Unit test coverage changes found

Unit test coverage has been updated through this PR.

Changes: 0 new tests, 0 removed tests, 1 improved, 0 decreased

Component/Hook	Statements	Functions	Branches	Change
Footnotes	95.2% 95.5%	100.0%	92.3%	+0.2%

[github-actions]

🟢 No visual differences found

Our visual comparison tests did not find any differences in the UI.

[danielguillan]

Looks good!