fix(sidebar): only apply text-sidebar-foreground to sidebar

[benkroeger]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation, readme or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ 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

The text-sidebar-foreground class was applied to the SidebarProvider, which is designed to wrap the whole app, therefore making the whole app inherit its font color. This has been removed. The correct place for it is in the Sidebar component

This replicates the changes from shadcn/ui

📸 Screenshots (if appropriate)

📝 Checklist

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