collection: do not pass order by clause for subselect, if not needed;…

… this fixes MS SQL support

src/Mapper/Dbal/DbalCollection.php

@@ -268,6 +268,9 @@ protected function getIteratorCount(): int
 	{
 		if ($this->resultCount === null) {
 			$builder = clone $this->queryBuilder;
+			if (!$builder->hasLimitOffsetClause()) {
+				$builder->orderBy(null);
+			}
 
 			/** @var StorageReflection $reflection */
 			$reflection = $this->mapper->getStorageReflection();