perf(nuxt): don't prefetch all global components

[danielroe]

🔗 Linked issue

resolves nuxt/nuxt#14675

❓ 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 like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This removes global components from being prefetched by default. (They will still be preloaded if they are used on the page being rendered on the server.)

👉 Migration

This isn't a breaking change as such, but users who are heavily using dynamic/global components, such as with a catchall page rendering CMS content or page building libraries, will likely want to use the prefetchComponents and preloadComponents utilities. (At the moment they do the same thing, but should semantically match the difference between link preload/prefetch.)

📝 Checklist

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

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[pi0]

Thanks!