Make Date header parsing locale-independent #2198

Job	Run time
PSV.Linux.latest.gcc14.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 39s
PSV.Linux.22.04.gcc9.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	25m 23s
PSV.Linux.22.04.gcc9.Cpplint	11s
PSV.Linux.latest.gcc14.Tests	41m 3s
PSV.Linux.22.04.gcc11.Tests	3m 34s
PSV.Linux.22.04.gcc13.Tests	9m 5s
PSV.Linux.22.04.gcc9.Tests.CodeCov	4m 59s
PSV.Win.VC2022	10m 43s
PSV.iOS.MacOS14.Xcode15.ARM64	5m 28s
PSV.Linux.22.04.gcc11.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	13m 2s
PSV.MacOS15.Xcode16.ARM64	7m 18s
PSV.Clang.Format.Checker	46s
PSV.Commit.Checker	9s
PSV.iOS.MacOS15.Xcode16.ARM64	7m 29s
PSV.Linux.22.04.clang.Tests	14m 18s
PSV.Linux.Android.22.04	6m 11s
PSV.iOS.MacOS15.Xcode26.ARM64	9m 47s
	2h 42m 5s

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