Perf improvement: fortunes, json, json_middleware

[pr-benchmarks]

Scenario	Environment	Date	Old RPS	New RPS	Change	Deviation	StDev	Dependencies
fortunes [Fixed]	Fortunes Razor Pages 4- Trends Database Gold Windows	12/30/2024 23:04:33	347,802	359,196	3.28 % (11,394) 👍	2.99 σ	3,815.82	Changes Name Version Diff Microsoft.AspNetCore.App 10.0.0-alpha.2.24623.1 -> 10.0.0-alpha.2.24627.1 f58b640...ad57bd0 Microsoft.NETCore.App 10.0.0-alpha.1.24620.10 -> 10.0.0-alpha.1.24629.1 dotnet/runtime@57ab984...1da6bd7
json [Fixed]	Json 2- Trends Gold Windows	12/30/2024 22:02:09	1,319,705	1,450,970	9.95 % (131,265) 👍	2.62 σ	50,188.75	Changes Name Version Diff Microsoft.AspNetCore.App 10.0.0-alpha.2.24623.1 -> 10.0.0-alpha.2.24627.1 f58b640...ad57bd0 Microsoft.NETCore.App 10.0.0-alpha.1.24620.10 -> 10.0.0-alpha.1.24629.1 dotnet/runtime@57ab984...1da6bd7
json_middleware [Fixed]	Json 5M 4- Trends Amd Linux	12/30/2024 23:05:13	932	936	0.35 % (3) 👍	2.24 σ	1.44	Changes Name Version Diff Microsoft.AspNetCore.App 10.0.0-alpha.2.24623.1 -> 10.0.0-alpha.2.24627.1 f58b640...ad57bd0 Microsoft.NETCore.App 10.0.0-alpha.1.24620.10 -> 10.0.0-alpha.1.24629.1 dotnet/runtime@57ab984...1da6bd7

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