ScansOverview: fallback for manual scans

src/components/scans/ScansOverview.svelte

@@ -101,7 +101,7 @@
       header: () => $_("track"),
       cell: (info) => {
         const track = info.getValue();
-        return track.name;
+        return track?.name || "?";
       },
       enableColumnFilter: true,
     },