fix: fix one more instance of post_processing in broken test

[jasonbarry]

Summary

Fixes this prod test, which I believe to have been broken due to this open-api change.

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[github-actions]

📊 Benchmark results

Comparing with a9acd6f

Package size: 241 MB

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    T-1      T    

Legend

• T-1 (a9acd6f): 241 MB
• T (current commit): 241 MB