fix(nuxt): use `$fetch` and `event.$fetch` for requests

[danielroe]

Some slight refactors to avoid using useFetch to perform fetches. (It's a composable that should only be called in Nuxt plugins or component setup functions.)

[pilcrowOnPaper]

So useRequestFetch() returns a fetch() with the current request context? Just to make sure, it doesn't return undefined in non-SSR context like useRequestEvent(), right?

[danielroe]

Yes. Exactly.

https://github.com/nuxt/nuxt/blob/73421483f60fd25d57e22b4c49e4b111745692cb/packages/nuxt/src/app/composables/ssr.ts#L39-L44

[pilcrowOnPaper]

Thanks!