Fix cache override warning output

[pipopotamasu]

Fixed: #11482

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

[apollo-cla]

@pipopotamasu: 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/

[netlify]

‼️ Deploy request for apollo-client-docs rejected.

Name	Link
🔨 Latest commit	add3c4c

[changeset-bot]

🦋 Changeset detected

Latest commit: 47f382b

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

[bignimbus]

LGTM! Thanks for submitting this! Since we're in the middle of cutting the 3.9.0 release candidate, I'll hold off on merging

[pipopotamasu]

@bignimbus Thank you for your review and approval!