Make Date header parsing locale-independent #2195

Job	Run time
PSV.Linux.22.04.gcc11.Tests	15m 39s
PSV.iOS.MacOS15.Xcode26.ARM64	5m 35s
PSV.Linux.22.04.gcc9.Tests.CodeCov	42m 18s
PSV.Commit.Checker	6s
PSV.Linux.22.04.clang.Tests	14m 50s
PSV.Win.VC2022	9m 58s
PSV.Linux.22.04.gcc9.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 35s
PSV.Linux.Android.22.04	8m 32s
PSV.Linux.22.04.gcc11.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	4m 45s
PSV.Linux.latest.gcc14.Tests	13m 28s
PSV.Linux.22.04.gcc9.Cpplint	9s
PSV.Clang.Format.Checker	37s
PSV.iOS.MacOS15.Xcode16.ARM64	5m 46s
PSV.Linux.latest.gcc14.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	7m 43s
PSV.iOS.MacOS14.Xcode15.ARM64	9m 6s
PSV.Linux.22.04.gcc13.Tests	20m 42s
PSV.MacOS15.Xcode16.ARM64	5m 52s
	2h 47m 41s

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