restore: fix crash when trying to mount fs volumes

src/volumes.js

@@ -213,8 +213,8 @@ async function mountAll() {
     debug('mountAll: mouting all volumes');
 
     for (const volume of await list()) {
+        if (volume.mountType === mounts.MOUNT_TYPE_MOUNTPOINT || volume.mountType === mounts.MOUNT_TYPE_FILESYSTEM) continue;
         const mount = { description: volume.name, ...volume };
         await mounts.tryAddMount(mount, { timeout: 10, skipCleanup: true }); // have to wait to avoid race with apptask
     }
 }
-