Perf improvement: antiforgery-generation

[pr-benchmarks]

Scenario	Environment	Date	Old RPS	New RPS	Change	Deviation	StDev	Dependencies
antiforgery-generation [Fixed]	Antiforgery Token Generation 7- Trends Amd Lin2	08/29/2025 14:09:33	280,113	294,513	5.14 % (14,400) 👍	2.24 σ	6,426.69	Changes Name Version Diff Microsoft.AspNetCore.Antiforgery.dll 10.0.0-rc.2.25420.109 -> 10.0.0-rc.2.25428.108 dotnet/dotnet@619d563...3a5e29a Microsoft.AspNetCore.App 10.0.0-rc.2.25420.109 -> 10.0.0-rc.2.25428.108 619d563...3a5e29a Microsoft.NETCore.App 10.0.0-rc.2.25420.109 -> 10.0.0-rc.2.25428.108 dotnet/runtime@619d563...3a5e29a

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