HHH-19985 Fix sub-selection index in anonymous tuple embeddable values

Author: mbellade

hibernate-core/src/main/java/org/hibernate/query/sqm/tuple/internal/AnonymousTupleEmbeddableValuedModelPart.java

@@ -128,7 +128,7 @@ private Map<String, ModelPart> createModelParts(
 					sqmExpressible,
 					attributeType,
 					sqlTypedMappings,
-					selectionIndex,
+					selectionIndex + index,
 					selectionExpression + "_" + attribute.getName(),
 					attribute.getName(),
 					modelPartContainer.findSubPart( attribute.getName(), null ),