fix(InputMenu/Select/SelectMenu): respect trailing: false over default trailingIcon

[Akur1a]

Linked issue

Resolves #6287

## What changed

This makes trailing="false" fully opt out of the trailing section, even when a component provides a default trailing icon internally.

Select, SelectMenu, and InputMenu all provide a default chevron through trailingIcon, so the shared icon helper now lets an explicit trailing: false win over that default.

Why

Before this, USelect still rendered the chevron because useComponentIcons treated any trailingIcon as enough reason to show trailing content. That made the public trailing prop feel a bit surprising: passing false did not actually hide the trailing icon.

This keeps the normal default chevron behavior, while allowing users to intentionally remove it.

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR fixes a logic bug in useComponentIcons.ts where a truthy trailingIcon prop would force trailing icon positioning even when the trailing prop was explicitly set to false. The fix tightens the isTrailing computation to respect explicit trailing: false. Three new test cases validate that InputMenu, Select, and SelectMenu components correctly omit trailing slot containers and trailing icon elements when trailing is false.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
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.
Description check	✅ Passed	The pull request description clearly explains what changed, why it changed, and which components are affected by the modification.
Title check	✅ Passed	The title clearly and specifically summarizes the main change: fixing behavior where trailing: false should be respected even when trailingIcon is provided.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[pkg-pr-new]

npm i https://pkg.pr.new/@nuxt/ui@6457

commit: 10e5bdb

[benjamincanac]

Thanks! 😊