Update operation helpers to use raw strings instead of OperationTypeNode

[jerelmiller]

#10509 introduced some helpers for determining the type of operation for a GraphQL query. This imported the OperationTypeNode from graphql-js which is not available in GraphQL 14. To maintain compatibility with graphql-js v14, this has been reverted to use plain strings.

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

[changeset-bot]

🦋 Changeset detected

Latest commit: 4498b4f

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	37.06 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs"	43.64 KB (-0.06% 🔽)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs" (production)	42.24 KB (-0.06% 🔽)
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"	4.26 KB (0%)
import { useQuery } from "dist/react/index.js" (production)	4.08 KB (0%)
import { useLazyQuery } from "dist/react/index.js"	4.57 KB (0%)
import { useLazyQuery } from "dist/react/index.js" (production)	4.39 KB (0%)
import { useMutation } from "dist/react/index.js"	2.5 KB (0%)
import { useMutation } from "dist/react/index.js" (production)	2.48 KB (0%)
import { useSubscription } from "dist/react/index.js"	2.23 KB (0%)
import { useSubscription } from "dist/react/index.js" (production)	2.2 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js"	4.7 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js" (production)	4.12 KB (0%)
import { useBackgroundQuery } from "dist/react/index.js"	4.17 KB (0%)
import { useBackgroundQuery } from "dist/react/index.js" (production)	3.6 KB (0%)
import { useReadQuery } from "dist/react/index.js"	2.66 KB (0%)
import { useReadQuery } from "dist/react/index.js" (production)	2.64 KB (0%)
import { useFragment } from "dist/react/index.js"	2.04 KB (0%)
import { useFragment } from "dist/react/index.js" (production)	2 KB (0%)