fix(docs): entity cache invalidation

[aaronArinder]

---

adding docs clarifying entity cache invalidation, with special attention to the nested arrays from the extension

Checklist

Complete the checklist (and note appropriate exceptions) before the PR is marked ready-for-review.

• PR description explains the motivation for the change and relevant context for reviewing
• PR description links appropriate GitHub/Jira tickets (creating when necessary)
• Changeset is included for user-facing changes
• Changes are compatible¹
• Documentation² completed
• Performance impact assessed and acceptable
• Metrics and logs are added³ and documented
• Tests added and passing⁴
  • Unit tests
  • Integration tests
  • Manual tests, as necessary

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[apollo-librarian]

✅ Docs preview ready

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File Changes

0 new, 1 changed, 0 removed

* graphos/routing/(latest)/performance/caching/response-caching/invalidation.mdx

Build ID: 4c033118ba0257db25287604
Build Logs: View logs

URL: https://www.apollographql.com/docs/deploy-preview/4c033118ba0257db25287604

[github-actions]

@aaronArinder, please consider creating a changeset entry in /.changesets/. These instructions describe the process and tooling.

[aaronArinder]

annoyingly, it won't let me set you as an optional reviewer, @paulpdaniels, but would greatly appreciate a sanity check on the docs if you have time

[carodewig]

Very helpful info!