fix(files_versions): Create folder if it doesn't exist

Signed-off-by: Git'Fellow <12234510+solracsf@users.noreply.github.com>

Author: solracsf

apps/files_versions/lib/Versions/LegacyVersionsBackend.php

@@ -380,9 +380,14 @@ public function clearVersionsForFile(IUser $user, Node $source, Node $target): v
 			throw new Exception('Relative path not found for node with path: ' . $source->getPath());
 		}
 
-		$versionFolder = $this->rootFolder->get($userId . '/files_versions');
+		try {
+			$versionFolder = $this->rootFolder->get($userId . '/files_versions');
+		} catch (NotFoundException $e) {
+			$versionFolder = $this->rootFolder->newFolder($userId . '/files_versions');
+		}
+
 		if (!$versionFolder instanceof Folder) {
-			throw new Exception('User versions folder does not exist');
+			throw new Exception('User versions folder is not a folder');
 		}
 
 		$versions = Storage::getVersions($userId, $relativePath);