fix(subtitles): address CodeRabbit review

- Unify external detection: isExternalSubtitle drops the bare-DeliveryUrl case
  (an Hls-delivered sub has a DeliveryUrl but isn't sub-add-ed) so sorting,
  loading and resolution agree; compareTracksForMenu now uses it.
- applyMpvSubtitleSelection wraps player calls in try/catch — fire-and-forget
  call sites no longer risk unhandled rejections.
- VideoContext offline-transcoded branch: treat missing IsTextSubtitleStream as
  text (use !isImageBasedSubtitle), matching the shared helper.
- ItemContent.tv refreshSubtitleTracks: apply compareTracksForMenu like the
  initial list.
- Tests: use the @/ alias; rework the embedded cases to actually exercise
  identity (reversed player order) and the ordinal fallback (same-language,
  no title).

components/ItemContent.tv.tsx

@@ -413,11 +413,13 @@ export const ItemContentTV: React.FC<ItemContentTVProps> = React.memo(
             )
           : freshItem.MediaSources?.[0];
 
-        // Get subtitle streams from the fresh data
-        const streams =
-          mediaSource?.MediaStreams?.filter(
+        // Get subtitle streams from the fresh data, ordered like jellyfin-web
+        // (embedded first, externals last) — same as the initial list.
+        const streams = [
+          ...(mediaSource?.MediaStreams?.filter(
             (s: MediaStream) => s.Type === "Subtitle",
-          ) ?? [];
+          ) ?? []),
+        ].sort(compareTracksForMenu);
 
         // Convert to Track[] with setTrack callbacks
         const tracks: Track[] = streams.map((stream) => ({

components/video-player/controls/contexts/VideoContext.tsx

@@ -198,7 +198,9 @@ export const VideoProvider: React.FC<{ children: ReactNode }> = ({
         // track list (same as online) — robust to the transcoded file's track
         // structure differing from the original MediaStreams. Order matches web.
         for (const sub of [...allSubs].sort(compareTracksForMenu)) {
-          if (sub.IsTextSubtitleStream) {
+          // Treat missing IsTextSubtitleStream as text (image-based only when
+          // explicitly false — matches isImageBasedSubtitle).
+          if (!isImageBasedSubtitle(sub)) {
             subs.push({
               name: sub.DisplayTitle || "Unknown",
               index: sub.Index ?? -1,