catch DirectoryOperationException to check Negotiate as for LdapException (#52748)

resolves https://github.com/dotnet/runtime/issues/51222Co-authored-by: NTrivalik <rborchert@live.de>

src/libraries/System.DirectoryServices.AccountManagement/src/System/DirectoryServices/AccountManagement/Context.cs

@@ -264,6 +264,10 @@ public bool Validate(string userName, string password)
                             // we don't return false here even if we failed with ERROR_LOGON_FAILURE. We must check Negotiate
                             // because there might be cases in which SSL fails and Negotiate succeeds
                         }
+                        catch (DirectoryOperationException)
+                        {
+                            // see LdapException
+                        }
 
                         BindLdap(networkCredential, defaultContextOptionsNegotiate);
                         _lastBindMethod = AuthMethod.Negotiate;