add kern.nisdomainname to support dotnet

[chris-smith-zocdoc]

Upstream: anthropic-experimental#115

Fixes CookieContainer initialization on .net 8. In 10 they refactored this so its doesn't statically initialize this

Error: TypeInitializationException: The type initializer for 'System.Net.CookieContainer' threw an exception.
  Inner: InvalidOperationException: GetDomainName: -1
System.TypeInitializationException: The type initializer for 'System.Net.CookieContainer' threw an exception.
 ---> System.InvalidOperationException: GetDomainName: -1
   at Interop.Sys.GetDomainName()
   at System.Net.CookieContainer.CreateFqdnMyDomain()
   at System.Net.CookieContainer..cctor()
   --- End of inner exception stack trace ---
   at System.Net.CookieContainer..ctor()
   at System.Net.Http.HttpConnectionSettings.CloneAndNormalize()
   at System.Net.Http.SocketsHttpHandler.SetupHandlerChain()
   at System.Net.Http.SocketsHttpHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
   at Program.Main() in /Users/chris.smith/src/sandbox-runtime/scripts/dotnet-sandbox-test/Program.cs:line 10

[eugene-yao-zocdoc]

Makes sense