fix(operation): groupfolder path is user independent

getPath returns the relativ to the user, i.e.
$userid/files/$groupFolderInternalPath which is then used to contstruct
the absolute path and keeping this information. By using getInernalPath()
we only receive the groupfolder relativ path and can construct the correct
and expected Nextcloud relative path as advertised.

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

Author: blizzz

lib/Operation.php

@@ -271,7 +271,7 @@ protected function replacePlaceholderN(Node $node): string {
 
 		if (isset($storage) && $storage->instanceOfStorage(GroupFolderStorage::class)) {
 			// group folders are always located within $DATADIR/__groupfolders/
-			$absPath = $storage->getLocalFile($node->getPath());
+			$absPath = $storage->getLocalFile($node->getInternalPath());
 			$pos = strpos($absPath, '/__groupfolders/');
 			// if the string cannot be found, the fallback is absolute path
 			// it should never happen #famousLastWords