Shared SSR/SSG hooks are not transformed

When writing `getStaticProps` outside of a page file, the superjson code is never injected. For example:
```ts
// props.ts
export const getStaticProps: GetStaticProps<Props> = async ctx => {
	// ...
}

// pages/page.tsx
export {getStaticProps} from '../props';

export default function Page() {
	// ...
}
```