feat(runtime-utils): pass original to mockNuxtImport factory

[yamachi4416]

🔗 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)
• ✨ 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

An original argument was added to the mockNuxtImport's factory function. this makes partial mocking easier

[pkg-pr-new]

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npm i https://pkg.pr.new/@nuxt/test-utils@1552

commit: 9787b15