Avoid rooting X509Certificate2 in SslSessionCache#101120

rzikm merged 3 commits intodotnet:maindotnet/runtime:mainfrom

rzikm:101090-Client-certs-with-HttpClient-on-Windows-prevents-X509Certificate2-cleanuprzikm/dotnet-runtime:101090-Client-certs-with-HttpClient-on-Windows-prevents-X509Certificate2-cleanupCopy head branch name to clipboard