Fix remaining offense for Performance/ConcurrentMonotonicTime

What does this MR do and why?

This MR fixes the remaining offense for 👮 Performance/ConcurrentMonotonicTime.

See https://github.com/rails/rails/pull/43502.

Contributes to #239356.

How to set up and validate locally

bundle exec rubocop --only Performance/ConcurrentMonotonicTime --parallel

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.