fix(js_formatter): fix #1511

[Conaclos]

Summary

Fix #1511

Test Plan

New test added.

[netlify]

✅ Deploy Preview for biomejs ready!

Name	Link
🔨 Latest commit	6d5bebb
🔍 Latest deploy log	https://app.netlify.com/sites/biomejs/deploys/65a1adc75e1c4b0008c7063c
😎 Deploy Preview	https://deploy-preview-1547--biomejs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 95 (🔴 down 5 from production) Accessibility: 97 (no change from production) Best Practices: 100 (no change from production) SEO: 93 (no change from production) PWA: - View the detailed breakdown and full score reports

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[codspeed-hq]

CodSpeed Performance Report

Merging #1547 will improve performances by 7.33%

_{Comparing conaclos/formatter/1511 (6d5bebb) with main (3bd7a9c)}

Summary

⚡ 1 improvements
✅ 89 untouched benchmarks

🆕 3 new benchmarks

Benchmarks breakdown

	Benchmark	main	conaclos/formatter/1511	Change
⚡	big5-added.json[cached]	2.4 ms	2.3 ms	+7.33%
🆕	typescript.js[cached]	N/A	5 s	N/A
🆕	json_formatter[typescript.js]	N/A	18.4 s	N/A
🆕	typescript.js[uncached]	N/A	5.5 s	N/A