Make Date header parsing locale-independent #2199

Job	Run time
PSV.Linux.latest.gcc14.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	30m 11s
PSV.Linux.22.04.gcc9.Cpplint	8s
PSV.Linux.22.04.gcc11.Tests	14m 12s
PSV.Linux.22.04.gcc9.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	3m 15s
PSV.Linux.22.04.gcc13.Tests	18m 48s
PSV.iOS.MacOS14.Xcode15.ARM64	7m 49s
PSV.Linux.22.04.gcc9.Tests.CodeCov	23m 21s
PSV.MacOS15.Xcode16.ARM64	6m 40s
PSV.iOS.MacOS15.Xcode26.ARM64	7m 5s
PSV.Linux.22.04.gcc11.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	3m 9s
PSV.Commit.Checker	5s
PSV.Linux.Android.22.04	8m 32s
PSV.Linux.latest.gcc14.Tests	13m 28s
PSV.Linux.22.04.clang.Tests	14m 58s
PSV.Win.VC2022	10m 31s
PSV.Clang.Format.Checker	43s
PSV.iOS.MacOS15.Xcode16.ARM64	6m 4s
	2h 48m 59s

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