wip feat: improve middleware performance by 50%

[sansyrox]

Description

This PR fixes #

Summary

This PR does....

PR Checklist

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Name	Status	Preview	Comments	Updated (UTC)
robyn	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 11, 2025 8:41pm

[recurseml]

✨ No issues found! Your code is sparkling clean! ✨

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[codspeed-hq]

CodSpeed Performance Report

Merging #1209 will not alter performance

_{Comparing fix/middleware-performance (72ede91) with main (d8339a7)}

Summary

✅ 150 untouched benchmarks