Enforce export type for all type-level exports.

[phryneas]

Checklist:

• If this PR contains changes to the library itself (not necessary for e.g. docs updates), please include a changeset (see CONTRIBUTING.md)
• If this PR is a new feature, please reference an issue where a consensus about the design was reached (not necessary for small changes)
• Make sure all of the significant new logic is covered by tests

This was triggered by my review over in #11112 - seems we were only enforcing that for import statements, but not for export statements.

[changeset-bot]

🦋 Changeset detected

Latest commit: ce6e69f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@apollo/client	Patch

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[github-actions]

size-limit report 📦

Path	Size
dist/apollo-client.min.cjs	37.16 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs"	43.73 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs" (production)	42.33 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js"	32.39 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js" (production)	31.22 KB (0%)
import { ApolloProvider } from "dist/react/index.js"	1.21 KB (0%)
import { ApolloProvider } from "dist/react/index.js" (production)	1.2 KB (0%)
import { useQuery } from "dist/react/index.js"	4.29 KB (0%)
import { useQuery } from "dist/react/index.js" (production)	4.1 KB (0%)
import { useLazyQuery } from "dist/react/index.js"	4.6 KB (0%)
import { useLazyQuery } from "dist/react/index.js" (production)	4.42 KB (0%)
import { useMutation } from "dist/react/index.js"	2.53 KB (0%)
import { useMutation } from "dist/react/index.js" (production)	2.51 KB (0%)
import { useSubscription } from "dist/react/index.js"	2.24 KB (0%)
import { useSubscription } from "dist/react/index.js" (production)	2.2 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js"	4.71 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js" (production)	4.14 KB (0%)
import { useBackgroundQuery } from "dist/react/index.js"	4.2 KB (0%)
import { useBackgroundQuery } from "dist/react/index.js" (production)	3.63 KB (0%)
import { useReadQuery } from "dist/react/index.js"	2.69 KB (0%)
import { useReadQuery } from "dist/react/index.js" (production)	2.67 KB (0%)
import { useFragment } from "dist/react/index.js"	2.08 KB (0%)
import { useFragment } from "dist/react/index.js" (production)	2.03 KB (0%)

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[jerelmiller]

My review is mostly a plea to keep formatting where it was before, just with the types/values separated. Thanks for getting this updated!

[phryneas]

Oh my god @jerelmiller, next time just tell me "dude, format that!", please don't put that much work in! 🤣
Thanks a ton!

Totally my fault - I had kinda anticipated that those would autoformat anyways after #11111, but thinking about it, that would only happen to those inside the react folder 😅