fix(Form): improve nested form validation handling

[romhml]

🔗 Linked issue

Resolves #5013

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Refactors the nested form logic inside the form component and fixes an issue where using FormField without an input would not display errors.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[pkg-pr-new]

npm i https://pkg.pr.new/@nuxt/ui@5024

commit: af3ee88

[vercel]

Suggested change

	if (matchesTarget(name, form.name)) form.api.clear()
	nestedErrors.push(...getFormErrors(form as any))
	if (matchesTarget(name, form.name)) {
	form.api.clear()
	} else {
	nestedErrors.push(...getFormErrors(form as any))
	}

The clear method collects errors from all nested forms regardless of whether they were actually cleared, potentially reintroducing errors that should have been cleared.

View Details

Analysis

Inconsistent error collection in Form.clear() method

What fails: Form.clear() collects errors from ALL nested forms instead of only non-cleared forms, inconsistent with setErrors() pattern

How to reproduce:

1. Create parent form with multiple nested forms containing errors
2. Call parentForm.clear('specificFormName') to clear only one nested form
3. Observe that getFormErrors() is called on all forms, including the just-cleared form

Result: Unnecessary getFormErrors() calls on cleared forms that return empty arrays

Expected: Only collect errors from forms that were NOT cleared, matching the pattern used in setErrors() method where only targeted forms are processed

Reference: The setErrors() method in the same file only collects errors from matched forms within the conditional block, but clear() collects from all forms unconditionally

[romhml]

The method used here collects the latest errors, so it excludes errors that have been cleared.