fix: unify import paths for Nitro runtime modules

[productdevbook]

🔗 Linked issue

wait: https://github.com/unjs/mkdist/pull/272

cc: https://github.com/nitrojs/nitro/pull/3246 Continuation of the work here

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• [x] 🐞 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

📝 Checklist

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

[productdevbook]

we have a problem, unbuild does not add .mts in runtime there is a problem on the unbuild side. So there is no access to types and no reading of types.

[pi0]

wait: https://github.com/unjs/mkdist/pull/272

Nitro will soon migrate to obuild which has proper output extensions and rewrites.