Use standard `std::shared_lock` for C++14 (#1651) #2129

Job	Run time
PSV.Linux.22.04.gcc9.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 52s
PSV.Linux.22.04.gcc11	8m 11s
PSV.Linux.22.04.gcc11.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 41s
PSV.MacOS15.Xcode16.ARM64	3m 50s
PSV.iOS.MacOS15.Xcode26.ARM64	7m 45s
PSV.Linux.22.04.gcc9.Cpplint	8m 56s
PSV.Linux.22.04.gcc13	10m 8s
PSV.iOS.MacOS14.Xcode15.ARM64	8m 0s
PSV.Win.VC2022	9m 49s
PSV.Linux.22.04.clang	8m 51s
PSV.Linux.22.04.gcc9.Tests.CodeCov	9m 59s
PSV.Linux.latest.gcc14.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 29s
PSV.iOS.MacOS15.Xcode16.ARM64	6m 7s
PSV.Linux.Android.22.04	9m 55s
PSV.Clang.Format.Checker	28s
PSV.Commit.Checker	0s
	1h 40m 1s

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