Perf improvement: json, kestrel-encoded-url, mvc

[pr-benchmarks]

Scenario	Environment	Date	Old RPS	New RPS	Change	Deviation	StDev	Dependencies
json	Json HttpSys 5- Trends Gold Win	08/08/2025 08:37:51	606,752	639,881	5.46 % (33,129) 👍	2.88 σ	11,514.51	Changes Name Version Diff Microsoft.AspNetCore.Antiforgery.dll 10.0.0-rc.1.25405.108 -> 10.0.0-rc.1.25407.106 dotnet/dotnet@a7417d8...4ce4c45 Microsoft.AspNetCore.App 10.0.0-rc.1.25405.108 -> 10.0.0-rc.1.25407.106 a7417d8...4ce4c45 Microsoft.NETCore.App 10.0.0-rc.1.25405.108 -> 10.0.0-rc.1.25407.106 dotnet/runtime@a7417d8...4ce4c45
kestrel-encoded-url	Kestrel Linux: Encoded URL symbols 8- Trends Intel Lin	08/08/2025 07:10:28	5,779	5,849	0.00 % (70) 👍	3.14 σ	22.29	Changes Name Version Diff Microsoft.AspNetCore.Antiforgery.dll 10.0.0-rc.1.25405.108 -> 10.0.0-rc.1.25407.106 dotnet/dotnet@a7417d8...4ce4c45 Microsoft.AspNetCore.App 10.0.0-rc.1.25405.108 -> 10.0.0-rc.1.25407.106 a7417d8...4ce4c45 Microsoft.NETCore.App 10.0.0-rc.1.25405.108 -> 10.0.0-rc.1.25407.106 dotnet/runtime@a7417d8...4ce4c45
mvc	Json Mvc 6- Trends Amd Lin2	08/08/2025 13:02:19	626,886	645,859	3.03 % (18,973) 👍	3.53 σ	5,370.91	Changes Name Version Diff Microsoft.AspNetCore.Antiforgery.dll 10.0.0-rc.1.25405.108 -> 10.0.0-rc.1.25407.106 dotnet/dotnet@a7417d8...4ce4c45 Microsoft.AspNetCore.App 10.0.0-rc.1.25405.108 -> 10.0.0-rc.1.25407.106 a7417d8...4ce4c45 Microsoft.NETCore.App 10.0.0-rc.1.25405.108 -> 10.0.0-rc.1.25407.106 dotnet/runtime@a7417d8...4ce4c45

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