fix(js_formatter): fix function parameter grouping heuristic checking type parameters

[faultyserver]

Summary

Playground Link.

This was a minor bug that only shows up two times in our entire monorepo: when a function declaration has a single generic type parameter, the parameters for that function sometimes end up getting grouped so that they prefer to break before the return type for the function does. If the parameter has a constraint (extends ...) or a default value (= DefaultType), then the parameters don't group, but if neither are present, then the parameters might group based on further heuristics.

However, the logic here had the constraint checked flipped from is_some() to is_none(), meaning the inverse was happening, as seen in the playground.

Test Plan

There was a prettier diff snapshot that I didn't even notice covering this case, but that's deleted now since the output matches.

[netlify]

✅ Deploy Preview for biomejs ready!

Name	Link
🔨 Latest commit	b02c26a
🔍 Latest deploy log	https://app.netlify.com/sites/biomejs/deploys/6578049efe3ce200088ad4e3
😎 Deploy Preview	https://deploy-preview-1153--biomejs.netlify.app/playground
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

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

[ematipico]

Good catch!