refactor(nuxt)!: remove support for 404.vue shorthand

[danielroe]

🔗 Linked issue

resolves nuxt/nuxt#14702

❓ 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 PR removes support for the 404.vue shorthand (mapping to a catchall with 404 status code). This was confusing when users also had a manual catchall, such as [...slug].vue (as the latter would never be hit). And it also separated out the 404 error page from error.vue which was used to render every other error page.

👉 Migration

1. Rename your 404.vue page to [...slug].vue.
2. Manually set the response status within that page.

  <script setup>
+   setResponseStatus(404)
  </script>

📝 Checklist

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

[codesandbox]

  Open in CodeSandbox Web Editor | VS Code | VS Code Insiders

[netlify]

✅ Deploy Preview for nuxt3-docs canceled.

Name	Link
🔨 Latest commit	17ac03c
🔍 Latest deploy log	https://app.netlify.com/sites/nuxt3-docs/deploys/636a57d32fc9fa0009ccafec

[ibrahim-990]

hello,
why in production mode not work the 404 page
iam set [...slug].vue in folder pages

[danielroe]

@ibrahim-990 If you are experiencing an issue, please open a new issue with a minimal reproduction 🙏

[ibrahim-990]

i open