fix: update to latest `@nuxt/module-builder`

[danielroe]

🔗 Linked issue

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation or readme)
• [x] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality)
• [ ] ✨ 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

Previous versions of @nuxt/module-builder produced incorrect types for files in the runtime/ directory. Specifically, a .d.ts declaration paired with a .mjs file. This isn't correct - it should be either .d.mts and .mjs or .d.ts and .js.

For maximum compatibility, @nuxt/module-builder v0.8 switched to .js extension for files in runtime/ directory.

With the latest Nuxt, this is now an error that removes correct plugin injection types.

Related PRs: https://github.com/nuxt/nuxt/pull/28480, https://github.com/nuxt/nuxt/pull/28593 See also https://github.com/nuxt/nuxt/issues/28672.

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 62.26%. Comparing base (052f9a9) to head (afd7163).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1439 +/- ## ======================================= Coverage 62.26% 62.26% ======================================= Files 79 79 Lines 3599 3599 Branches 397 397 ======================================= Hits 2241 2241 Misses 1328 1328 Partials 30 30 ```

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