perf: only fetch acls when not present already

Author: Carl Schwan

lib/Service/PermissionService.php

@@ -64,7 +64,7 @@ public function getPermissions(int $boardId, ?string $userId = null) {
 		try {
 			$board = $this->getBoard($boardId);
 			$owner = $this->userIsBoardOwner($boardId, $userId);
-			$acls = $board->getDeletedAt() === 0 ? $this->aclMapper->findAll($boardId) : [];
+			$acls = $board->getDeletedAt() === 0 && $board->getAcl() === null ? $this->aclMapper->findAll($boardId) : [];
 		} catch (MultipleObjectsReturnedException|DoesNotExistException $e) {
 			$owner = false;
 			$acls = [];