Update azure-typespec/http-client-csharp version to prerelease 1.0.0-alpha.20260213.1 - #56272

Update azure-typespec/http-client-csharp version to prerelease 1.0.0-alpha.20260213.1#56272

JoshLove-msft merged 6 commits into

Azure:mainAzure/azure-sdk-for-net:mainfrom

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