fix(kit): resolve aliases in plugin src

[danielroe]

🔗 Linked issue

resolvesnuxt/nuxt#14299

❓ 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

The test in

framework/packages/nuxt/src/core/plugins/unctx.ts

Line 17 in 8c2c80e

returnBoolean(app?.plugins.find(i=>i.src===id)||app.middleware.find(m=>m.path===id))

relies on an absolute path. It probably makes sense to resolve plugin paths to absolute when normalizing though, and this resolves the other issue too.

📝 Checklist

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

[netlify]

✅ Deploy Preview for nuxt3-docs canceled.

Name	Link
🔨 Latest commit	86923dc
🔍 Latest deploy log	https://app.netlify.com/sites/nuxt3-docs/deploys/62d95ae056933a000899810c