fix(ColorModeButton): use css to display color mode icon

[moshetanzer]

This is just the first one to see if the team are happy with it - will do rest of buttons if you are 😄 thanks for your work

EDIT

Cant really think of a normal way to do UColorModeSwitch and UColorModeSelect and UColorModeAvatar and UColorModeImage are already using the method used in this implem.

🔗 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

📝 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@5394

commit: a5499e9

[benjamincanac]

I've checked in the preview and it's rendered super small 🤔

Also, you need to remove the defineSlots which is useless.

Could this be worth applying the same changes in the Vue ColodeModeButton as well?

[moshetanzer]

cant imagine what issue size could be. Have removed unused code