Merge pull request #12835 from nextcloud/backport/12831/stable13

[stable13] Do not update child all child shares on group share update

Author: MorrisJobke

lib/private/Share20/DefaultShareProvider.php

@@ -230,6 +230,7 @@ public function update(\OCP\Share\IShare $share) {
 			$qb = $this->dbConn->getQueryBuilder();
 			$qb->update('share')
 				->where($qb->expr()->eq('parent', $qb->createNamedParameter($share->getId())))
+				->andWhere($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_USERGROUP)))
 				->set('uid_owner', $qb->createNamedParameter($share->getShareOwner()))
 				->set('uid_initiator', $qb->createNamedParameter($share->getSharedBy()))
 				->set('item_source', $qb->createNamedParameter($share->getNode()->getId()))