Disable remaining RuboCop offense for Performance/AncestorsInclude

What does this MR do and why?

This MR disables the last remaining 👮 offense for Performance/AncestorsInclude which a false positive since we are implementing ancestors ourselves with different semantics.

Related to #354328 (closed)

Screenshots or screen recordings

n/a

How to set up and validate locally

bundle exec rubocop --only Performance/AncestorsInclude

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.