[HotStar] Set language field from tags (#1700)

Authored by: Ashish0804

yt_dlp/extractor/hotstar.py

@@ -230,6 +230,11 @@ class HotStarIE(HotStarBaseIE):
             if tags and 'encryption:plain' not in tags:
                 for f in current_formats:
                     f['has_drm'] = True
+            if tags and 'language' in tags:
+                lang = re.search(r'language:(?P<lang>[a-z]+)', tags).group('lang')
+                for f in current_formats:
+                    if not f.get('langauge'):
+                        f['language'] = lang
             formats.extend(current_formats)
             subs = self._merge_subtitles(subs, current_subs)
         if not formats and geo_restricted: