Add $shallow arg to RoomShareProvider::getSharesInFolder

A new `$shallow` argument was introduced to `IShareProvider::getSharesInFolder` in NC25 by nextcloud/server#31728.

This PR adds this new argument and the necessary changes to make it work based on this example https://github.com/nextcloud/server/pull/31728/files#diff-dee1351696d7eae959761edf66c8e5a9052e28be73319733d857a9ab2d9fc967=

Signed-off-by: Louis Chemineau <louis@chmn.me>

lib/Share/RoomShareProvider.php

@@ -520,10 +520,11 @@ public function move(IShare $share, $recipient): IShare {
 	 * @param string $userId
 	 * @param Folder $node
 	 * @param bool $reshares Also get the shares where $user is the owner instead of just the shares where $user is the initiator
+	 * @param bool $shallow Whether the method should stop at the first level, or look into sub-folders.
 	 * @return IShare[][]
 	 * @psalm-return array<array-key, non-empty-list<IShare>>
 	 */
-	public function getSharesInFolder($userId, Folder $node, $reshares): array {
+	public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = true): array {
 		$qb = $this->dbConnection->getQueryBuilder();
 		$qb->select('*')
 			->from('share', 's')
@@ -550,7 +551,11 @@ public function getSharesInFolder($userId, Folder $node, $reshares): array {
 		}
 
 		$qb->innerJoin('s', 'filecache', 'f', $qb->expr()->eq('s.file_source', 'f.fileid'));
-		$qb->andWhere($qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId())));
+		if ($shallow) {
+			$qb->andWhere($qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId())));
+		} else {
+ 			$qb->andWhere($qb->expr()->like('f.path', $qb->createNamedParameter($this->dbConnection->escapeLikeParameter($node->getInternalPath()) . '/%')));
+		}
 
 		$qb->orderBy('s.id');