fix null check to unblock sdk (#103523)

Author: kasperk81

src/libraries/Microsoft.Extensions.HostFactoryResolver/src/HostFactoryResolver.cs

@@ -163,9 +163,10 @@ static bool IsApplicationNameArg(string arg)
                         => arg.Equals("--applicationName", StringComparison.OrdinalIgnoreCase) ||
                             arg.Equals("/applicationName", StringComparison.OrdinalIgnoreCase);
 
-                    args = args.Any(arg => IsApplicationNameArg(arg)) || assembly?.GetName().Name is null
-                        ? args
-                        : args.Concat(new[] { "--applicationName", assembly.GetName().Name }).ToArray();
+                    if (!args.Any(arg => IsApplicationNameArg(arg)) && assembly.GetName().Name is string assemblyName)
+                    {
+                        args = args.Concat(new[] { "--applicationName", assemblyName }).ToArray();
+                    }
 
                     var host = hostFactory(args);
                     return GetServiceProvider(host);