Add logging for user attribute setting during auto-creation

This change adds error logging for when user attributes fail to be set
during the external user auto-creation process.

This helps in diagnosing issues and ensures better tracking of attribute
setting failures.

lib/RT/Interface/Web.pm

@@ -847,7 +847,18 @@ sub AttemptExternalAuth {
                         CallbackPage => '/autohandler'
                     );
                     my $method = "Set$attribute";
-                    $UserObj->$method( $new_user_info->{$attribute} ) if defined $new_user_info->{$attribute};
+                    if ( defined $new_user_info->{$attribute} ) {
+                        if ( ( $UserObj->$attribute // '' ) eq $new_user_info->{$attribute} ) {
+                            RT->Logger->debug("Field $attribute is already set to $new_user_info->{$attribute}, skipping");
+                            next;
+                        }
+                        my ( $ok, $msg ) = $UserObj->$method( $new_user_info->{$attribute} );
+                        unless ($ok) {
+                            RT->Logger->error(
+                                "Couldn't set $attribute to " . $new_user_info->{$attribute}. " for user $user: $msg"
+                            );
+                        }
+                    }
                 }
                 $HTML::Mason::Commands::session{'CurrentUser'}->Load($user);
             } else {