fix(nuxt): don't prerender index.html with a server

[danielroe]

🔗 Linked issue

resolves nuxt/nuxt#15016

❓ 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

We should not be prerendering index.html if there is a dynamic server as runtime config (or nitro plugins) may change the response.

📝 Checklist

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

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[LastxTemplar]

I would just like to say that this is not a minor bug, it's an app breaking bug. We have the ssr flag set to false but it still generates the index page and our runtime env values are not available in there. This breaks the app especially if you have middleware using a service like auth0. Can this please be merge as soon as possible? or at least provide a workaround to forcefully not generate the index page.
Thank you!

[manniL]

@LastxTemplar see nuxt/nuxt#15016 for a workaround.

[LastxTemplar]

@LastxTemplar see nuxt/nuxt#15016 for a workaround.

Thank you!

[danielroe]

I would also add that when I mark something p3 vs p4 it doesn't mean it will get less attention. For me, it's:

(num people affected) x (severity of the issue) - (possibility of workaround)