HHH-18693 Synchronized with changes from HHH-18683

Author: cigaly

tooling/metamodel-generator/src/main/java/org/hibernate/processor/validation/MockSessionFactory.java

@@ -822,12 +822,7 @@ public EntityDomainType<?> entity(String entityName) {
 
 		@Override
 		public @Nullable EntityDomainType<?> findEntityType(@Nullable String entityName) {
-			if ( isEntityDefined(entityName) ) {
-				return new MockEntityDomainType<>(entityName);
-			}
-			else {
-				return null;
-			}
+			return entity( entityName );
 		}
 
 		@Override