fix(Meter): correct vertical alignment of progress bar

[DanielPagani]

Resolves #4794

❓ 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

• Add h-full, flex, and items-center to [&::-webkit-meter-inner-element] pseudo-element
• Add h-full to [&::-webkit-meter-bar] pseudo-element

📝 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@4735

commit: ee930cf