[useFragment] Using two fragments inside component result in unknown or {} type

# useFragment

Hello, while I'm using two `useFragment` inside my component, the data coming from the second call gets either `unknown` or `{}` with Typescript:

E.g:

```typescript
const data1 = useFragment(FirstFragment, props.queryRef);

const person = useFragment(PersonFragment, data1.person);
```

I'm spreading the `PersonFragment` inside the `FirstFragment`, I checked for the types created by relay and Indeed they show the right definition for it, but for some reason, either Typescript/VS-Code isn't able to infer the type here.

Start with the generated TypeScript definitions for FirstFragment and PersonFragment and the two-call useFragment example in the issue. Reproduce the inference result in VS Code or TypeScript, then trace why data1.person becomes unknown or {}. Done means the second useFragment receives and exposes the expected Person type.

Written by the indexing model from the issue text.