fix(files_sharing): Move path filtering to group share resolution

Previously, this was preventing users without a specific USERGROUP entry to see GROUP shares.

Signed-off-by: Louis Chmn <louis@chmn.me>
Signed-off-by: Salvatore Martire <4652631+salmart-dev@users.noreply.github.com>

Author: artonge

lib/private/Share20/DefaultShareProvider.php

@@ -951,14 +951,23 @@ private function _getSharedWith(
 				}
 
 				if ($path !== null) {
-					$qb->leftJoin('s', 'share', 'sc', $qb->expr()->eq('sc.parent', 's.id'))
-						->andWhere($qb->expr()->eq('sc.share_type', $qb->createNamedParameter(IShare::TYPE_USERGROUP)))
-						->where($qb->expr()->eq('sc.share_with', $qb->createNamedParameter($userId)));
+					$onClause = $qb->expr()->andX(
+						$qb->expr()->eq('sc.parent', 's.id'),
+						$qb->expr()->eq('sc.share_type', $qb->createNamedParameter(IShare::TYPE_USERGROUP)),
+						$qb->expr()->eq('sc.share_with', $qb->createNamedParameter($userId)),
+					);
+					$qb->leftJoin('s', 'share', 'sc', $onClause);
 
 					if ($forChildren) {
-						$qb->andWhere($qb->expr()->like('sc.file_target', $qb->createNamedParameter($this->dbConn->escapeLikeParameter($path) . '_%')));
+						$qb->orWhere(
+							$qb->expr()->like('s.file_target', $qb->createNamedParameter($this->dbConn->escapeLikeParameter($path) . '_%')),
+							$qb->expr()->like('sc.file_target', $qb->createNamedParameter($this->dbConn->escapeLikeParameter($path) . '_%')),
+						);
 					} else {
-						$qb->andWhere($qb->expr()->eq('sc.file_target', $qb->createNamedParameter($path)));
+						$qb->orWhere(
+							$qb->expr()->eq('s.file_target', $qb->createNamedParameter($path)),
+							$qb->expr()->eq('sc.file_target', $qb->createNamedParameter($path)),
+						);
 					}
 				}