Issue #3447691 - Change the container element for empty variation fields to a SPAN element

Closes #3447691

modules/product/src/ProductVariationFieldRenderer.php

@@ -112,10 +112,11 @@ class ProductVariationFieldRenderer implements ProductVariationFieldRendererInte
       if (isset($rendered_field['#type']) && $rendered_field['#type'] == 'view') {
         return $rendered_field;
       }
-      // Ensure that a <div> is rendered even if the field is empty, to allow
+      // Ensure that a <span> is rendered even if the field is empty, to allow
       // field replacement to work when the variation changes.
       if (!Element::children($rendered_field)) {
-        $rendered_field['#type'] = 'container';
+        $rendered_field['#type'] = 'html_tag';
+        $rendered_field['#tag'] = 'span';
       }
     }