Downgrade oddbird popover back to 0.52.0

[rezrah]

Summary

Rolling back a project dependency to previous version to ensure comptability with downstream users.

Towards unblocking #1298

List of notable changes:

• Roll back @oddbird/popover to 0.5.2

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

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]

⚠️ No Changeset found

Latest commit: 7ce46aa

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 changesets to release 8 packages

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

Click here to learn what changesets are, and how to add one.

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

[github-actions]

🟢 No design token changes found

[Copilot]

Pull request overview

Rolls back the @oddbird/popover-polyfill dependency used by @primer/react-brand to restore compatibility for downstream consumers (reverting part of the dependency upgrades introduced recently).

Changes:

• Downgrade @oddbird/popover-polyfill in packages/react/package.json from 0.6.1 to 0.5.2.
• Update package-lock.json to reflect the downgraded resolved package/version/integrity.
• Update the existing changeset to remove the release-note line that claimed the dependency was upgraded.

Show a summary per file

File	Description
packages/react/package.json	Pins @oddbird/popover-polyfill back to 0.5.2 for @primer/react-brand.
package-lock.json	Aligns lockfile entries with the downgraded @oddbird/popover-polyfill version.
.changeset/fruity-insects-jump.md	Removes the line documenting the (now-reverted) popover polyfill upgrade.

Copilot's findings

• Files reviewed: 2/3 changed files
• Comments generated: 2

[Copilot]

The PR title/description references downgrading to 0.52.0, but this dependency is set to 0.5.2. Please confirm the intended target version and align the PR metadata (or the dependency version) to avoid confusion for reviewers and release notes.

[github-actions]

🟢 No unit test coverage changes found

All components and hooks with tests maintain the same coverage as the main branch.

[github-actions]

🟢 No visual differences found

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