fix: locale prefixes are not added to route aliases

[BobbieGoede]

🔗 Linked issue

• page alias no have prefix  #2957

❓ 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

Resolves #2957

This adds locale prefixes to route aliases but requires the experimental scanPageMeta feature to be enabled to work, not entirely sure where in the docs would be appropriate to document this.

📝 Checklist

• I have linked an issue or discussion.
• I have added tests (if possible).
• I have updated the documentation accordingly.

[kazupon]

Thanks!
Your PR look good me.

It depend on scanPageMeta, but I am curious as to when it becomes GA feature. I seem that has performance issue. /cc @danielroe

If it does not become GA, we need to find out another solution.

[danielroe]

I would like to make scanPageMeta GA for Nuxt v3.12 if possible (or v4 if not).

~> nuxt/nuxt#27134

[kazupon]

I would like to make scanPageMeta GA for Nuxt v3.12 if possible (or v4 if not).

Good news!
Thanks @danielroe ❤️

[kazupon]

I think nuxt i18n should check the scanPageMeta value and warn if it is false.
Because, if that value changes to false, nuxt i18n route aliases don't work.

[BobbieGoede]

I have just added a warning that logs when the feature is not enabled 8cab851 (#2962)!