feat(i18n): enable pt-br translation

[sozua]

Description

The pt-br (Brazilian Portuguese) language is now translated and reviewed in Crowdin, so I think it's time to enable it in the website.

Validation

Check in the language dropdown that "Brazilian Portuguese" is visible and navigates to /pt-br pages correctly.

Related Issues

N/A

Check List

• I have read the Contributing Guidelines and made commit messages that follow the guideline.
• I have run pnpm format to ensure the code follows the style guide.
• I have run pnpm test to check if all tests are passing.
• I have run pnpm build to check if the website builds without errors.
• I've covered new added functionality with unit tests if necessary.

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Project	Deployment	Preview	Updated (UTC)
nodejs-org	Ready	Preview	Dec 8, 2025 5:23pm

[github-actions]

👋 Codeowner Review Request

The following codeowners have been identified for the changed files:

Team reviewers: @nodejs/nodejs-website

Please review the changes when you have a chance. Thank you! 🙏

[Copilot]

Pull request overview

This PR enables Brazilian Portuguese (pt-br) translation on the Node.js website by updating the i18n configuration to set enabled: true and adding the hrefLang value. The translation files are already complete in Crowdin and ready for use.

• Sets Brazilian Portuguese as an enabled language in the i18n configuration
• Adds hrefLang value to enable proper HTML lang attribute generation

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[bmuenzenmeyer]

congrats!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.71%. Comparing base (aaf3ca0) to head (ca4d4be).
⚠️ Report is 3 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8403      +/-   ##
==========================================
- Coverage   73.73%   73.71%   -0.02%     
==========================================
  Files         107      107              
  Lines        9155     9155              
  Branches      308      308              
==========================================
- Hits         6750     6749       -1     
- Misses       2403     2404       +1     
  Partials        2        2              

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[ovflowd]

I've fast-tracked as I don't see reasons for why not getting this shipped asap :)