feat(Tree): provide additional slot props

[hywax]

🔗 Linked issue

❓ 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

Needed to display an indeterminate state, if, for example, we are creating a checkbox.

Add: isIndeterminate, handleSelect, handleToggle

https://reka-ui.com/docs/components/tree

📝 Checklist

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

[hywax]

@benjamincanac I don't really understand why the tests failed. The tests are running locally, and I haven't touched the functionality where the tests failed.

I can't restart CI; I think something went wrong at some point.

[benjamincanac]

@hywax I've reran them, there is a race condition in the Form tests somewhere we have to fix 😬

[benjamincanac]

Does this enable Checkbox compatibility without having to implement it in the component (#4243)? If so, we could add an example in the docs!

[pkg-pr-new]

npm i https://pkg.pr.new/@nuxt/ui@5194

commit: 148f24c