fix(nuxt): only redirect if path is not the same as initial url

[danielroe]

🔗 Linked issue

resolves #20491

❓ 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)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

A regression was introduced in #20247 - namely, that it became impossible to add a new route and then redirect to it within the same request - this would become a redirection.

This adds a check that enables adding dynamic routes in this kind of way - we won't send a redirect to the same URL as the initial request.

📝 Checklist

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

[manniL]

Good catch!

[CernyMatej]

Thanks!