chore(ui): Update NavBar to receive containerSx prop

[LauraBeatris]

Description

Checklist

• pnpm test runs as expected.
• pnpm build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other:

[changeset-bot]

🦋 Changeset detected

Latest commit: 83be304

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

This PR includes changesets to release 2 packages

Name	Type
@clerk/ui	Patch
@clerk/chrome-extension	Patch

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Project	Deployment	Actions	Updated (UTC)
clerk-js-sandbox	Ready	Preview, Comment	May 18, 2026 3:09pm

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ℹ️ Recent review info

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Configuration used: Repository YAML (base), Organization UI (inherited)

Review profile: CHILL

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Run ID: b2e3cf74-8b9c-4f1f-bc6a-b1fd7004d59c

📥 Commits

Reviewing files that changed from the base of the PR and between 4fc38a0 and 83be304.

📒 Files selected for processing (3)

• .changeset/thirty-jeans-live.md
• packages/ui/src/components/ConfigureSSO/ConfigureSSONavbar.tsx
• packages/ui/src/elements/Navbar.tsx

---

📝 Walkthrough

Walkthrough

This PR extends the NavBar component with an optional containerSx prop that allows consuming components to customize the navbar container's flex layout. The prop is threaded from NavBar through NavbarContainer, where it is merged with default styles via an sx array. The NavBar component's items rendering is also refactored to conditionally render the routes button column only when routes exist. ConfigureSSONavbar demonstrates the feature by applying column-reverse stacking with flex constraints.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: adding a containerSx prop to the NavBar component, which aligns with all file modifications in the changeset.
Description check	✅ Passed	The description relates to the changeset by including an image of the SSO configuration UI that uses the updated NavBar layout, and confirms tests and builds pass.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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commit: 83be304