fix(webpack): print build errors

[danielroe]

🔗 Linked issue

❓ 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

Currently webpack does not print build errors, despite the comment in this file.

For a reproduction, see https://stackblitz.com/edit/nuxt-starter-repdpw and run npm run build. The following is all that is printed:

 ERROR  Nuxt build error                                                                        11:40:09

  at compile@node_modules/ (nuxt/webpack-builder/dist/index.mjs:1165:19)
  at <anonymous> (<anonymous>)

📝 Checklist

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

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