fix(library): a listing poll can no longer put back an older resume point

A poll already out when the player closed answered with the point the server held before the
closing beacon, over the row's patch; Continue then opened there and wrote it back. The close now
cancels the listings' fetches before patching and reads them again once the beacon has landed.

frontend/src/components/LibraryPlayer.tsx

@@ -69,16 +69,24 @@ export default function LibraryPlayer({
   });
   useMediaKeys(media);
   // The library row's bar follows the point at once — both listings this job may sit in — rather
-  // than after the next refetch, which may land before the closing beacon does.
+  // than after the next refetch. On the way out a listing poll may already be out, having read the
+  // server before the closing point lands: it is cancelled, or its answer replaced the row's point
+  // with the older one, Continue opened there, and its first checkpoint wrote it back over the right
+  // one. Once the point is on the server, the listings are read again.
+  const lists = [qk.downloads(), qk.downloadsShared()];
   const keepPoint = (position: number, duration: number, leaving: boolean) => {
     const at = keptPosition(position, duration);
-    for (const key of [qk.downloads(), qk.downloadsShared()]) {
+    for (const key of lists) {
+      if (leaving) void qc.cancelQueries({ queryKey: key, exact: true });
       qc.setQueryData<DownloadJob[]>(key, (jobs) =>
         jobs?.map((j) => (j.id === job.id ? { ...j, position_seconds: at } : j)),
       );
     }
-    if (leaving) api.saveDownloadProgressBeacon(job.id, position, duration);
-    else void api.saveDownloadProgress(job.id, position, duration).catch(() => {});
+    if (leaving) {
+      api.saveDownloadProgressBeacon(job.id, position, duration, () => {
+        for (const key of lists) void qc.invalidateQueries({ queryKey: key, exact: true });
+      });
+    } else void api.saveDownloadProgress(job.id, position, duration).catch(() => {});
   };
   useResume(media, String(job.id), fromStart ? 0 : (job.position_seconds ?? 0), keepPoint);