fix: reverse conditions to default to v3

[danielroe]

This means that when run on a project directory without Nuxt we get Nuxt 3 defaults:

Working directory: /Users/daniel
Nuxt project info: (copied to clipboard)

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- Operating System: Darwin
- Node Version:     v20.3.1
- Nuxt Version:     -
- CLI Version:      0.2.0
- Nitro Version:    -
- Package Manager:  unknown
- Builder:          -
- User Config:      -
- Runtime Modules:  -
- Build Modules:    -
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