Fix: Support useMutation client param passed to execute function

[dciesielkiewicz]

Motivation and context:

Our team found that according to types useMutation hook should support client prop passed to execute function, but in practice it only supports client prop passed to useMutation hook, only. Here is a fix

Checklist:

• 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

[apollo-cla]

@dciesielkiewicz: Thank you for submitting a pull request! Before we can merge it, you'll need to sign the Apollo Contributor License Agreement here: https://contribute.apollographql.com/

[changeset-bot]

🦋 Changeset detected

Latest commit: 4341208

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

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[jerelmiller]

Thanks so much for this contribution @dciesielkiewicz 🎉 🎉 .

Really good catch on this being allowed via types, but not used at runtime. We'll get this in the next patch release!

[netlify]

✅ Deploy Preview for apollo-client-docs ready!

Built without sensitive environment variables

Name	Link
🔨 Latest commit	4341208
🔍 Latest deploy log	https://app.netlify.com/sites/apollo-client-docs/deploys/63f3e0249b914300081a4bc8
😎 Deploy Preview	https://deploy-preview-9438--apollo-client-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.