Perf regression: json_middleware, json_middleware, kestrel-header-symbols

[pr-benchmarks]

Scenario	Environment	Date	Old RPS	New RPS	Change	Deviation	StDev	Dependencies
json_middleware	Json 5M 2- Trends Gold Windows	05/20/2025 22:12:51	933	932	-0.15 % (-1) 👎	-2.40 σ	0.58	Changes Name Version Diff Json.dll 1.0.0 -> 1.0.0 aspnet/Benchmarks@2b8c6a4...3e7fb8f
json_middleware	Json 400k 2- Trends Gold Windows	05/20/2025 22:13:43	11,770	11,740	-0.26 % (-30) 👎	-4.96 σ	6.07	Changes Name Version Diff Json.dll 1.0.0 -> 1.0.0 aspnet/Benchmarks@2b8c6a4...3e7fb8f
kestrel-header-symbols	Kestrel Linux: Invalid Header 1- Trends Intel Windows	05/20/2025 21:40:14	199,877	0	-100.00 % (-199,877) 👎	-160.18 σ	1,247.84	Changes Name Version Diff Kestrel.dll 1.0.0 -> 1.0.0 aspnet/Benchmarks@2b8c6a4...3e7fb8f

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