use listhen for preview command for static presets

[danielroe]

• requires listhen have support for taking no entrypoint
• set baseURL in preview command for static preset to respect nitro config

https://github.com/unjs/listhen

[andresilva-cc]

Came from nuxt/nuxt#27923.

I'm also having this problem and had to manually copy everything from .output/public into .output/public/<baseURL>, that works for now.

There's also another problem related with baseURL when using Vitest with nuxt environment, it gives the following error:

[nuxt] error caught during app initialization FetchError: [GET] "/<baseURL>/_nuxt/builds/meta/test.json": 404 Cannot find any path matching /<baseURL>/_nuxt/builds/meta/test.json.

It's been reported here: nuxt/test-utils#865