[BUGFIX] fix grid row identifiers being rendered when using an empty label

Classes/Finisher/Forms/FormsFinisher.php

@@ -159,12 +159,14 @@ class FormsFinisher extends AbstractFinisher {
 			if ($type === 'StaticText') {
 				$value = $formElement->getLabel();
 			} elseif ($type === 'GridRow' || $type === 'Fieldset') {
-				$value = $formElement->getLabel();
-				if (!empty($value)) {
-					$markerName = $value;
-					$markerLabel = $value;
-					$value = ''; // Set value to empty string to not render it twice (we already render it as label)
+				$label = $formElement->getLabel();
+				if (empty($label)) {
+					continue; // Skip entirely if GridRow/Fieldset has no label
 				}
+
+				$markerName = $label;
+				$markerLabel = $label;
+				$value = ''; // Don’t render value
 			}
 
 			$markerLabels[$markerName] = $markerLabel;