Do not enforce HTTP/2 for cURL-based network #1884

Job	Run time
PSV.Linux.22.04.gcc9.Cpplint	8m 22s
PSV.Linux.22.04.gcc9.Tests.CodeCov	10m 6s
PSV.Linux.22.04.gcc9.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 7s
PSV.MacOS14.Xcode15	3m 19s
PSV.iOS.MacOS14.Xcode15	5m 40s
PSV.MacOS13.Xcode16	3m 56s
PSV.Linux.22.04.gcc13.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	6m 53s
PSV.Linux.22.04.gcc13	11m 51s
PSV.Linux.22.04.clang	8m 40s
PSV.iOS.MacOS13.Xcode14	10m 2s
PSV.iOS.MacOS13.Xcode15	19m 31s
PSV.iOS.MacOS13.Xcode16	5m 42s
PSV.Linux.22.04.gcc11	7m 41s
PSV.Linux.22.04.gcc11.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 10s
PSV.MacOS13.Xcode15.x86_64	4m 14s
PSV.Linux.Android.22.04	5m 7s
PSV.Commit.Checker	7s
PSV.Win.VC2019	9m 41s
	2h 5m 9s

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