test: correct type inference for routes

[danielroe]

🔗 Linked issue

resolves https://github.com/nuxt/framework/issues/7363, https://github.com/nuxt/framework/issues/8078

❓ Type of change

• [x] 🧹 Chore
• [ ] 📖 Documentation (updates to the documentation or readme)
• [x] 🐞 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

toMatchTypeOf can be misleading - this updates test for greater strictness. There are a few issues that appear in consequence; I'm marking PR as draft until we can fix them.

📝 Checklist

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