Why not support other props like body or query in NitroFetchOptions

[jcc1997]

I found $fetch missing type check for body which can be defined in eventhandler<{ body: MyRequestBody }>

[jcc1997]

https://github.com/unjs/nitro/blob/b285a9dfb7459fc40f03b6b704d0c64eb319de5a/src/types/fetch/fetch.ts#L53-L58

I think add type infer in here should work. But why not before?