ui: default to sub (jpn) instead of dub for playback

server/app.py

@@ -255,7 +255,7 @@ def api_episodes(anime_id: int):
 
 
 @app.get("/api/episode/{ep_id}/stream")
-def api_stream(ep_id: int, lang: str = "eng"):
+def api_stream(ep_id: int, lang: str = "jpn"):
     def go():
         master = _upstream(upstream.master_m3u8, ep_id, lang)
         if not master: