[ie/abematv] Fix season metadata (#8607)

Authored by: middlingphys

yt_dlp/extractor/abematv.py

@@ -211,7 +211,8 @@ class AbemaTVIE(AbemaTVBaseIE):
             'id': '194-25_s2_p1',
             'title': '第1話 「チーズケーキ」　「モーニング再び」',
             'series': '異世界食堂２',
-            'series_number': 2,
+            'season': 'シーズン2',
+            'season_number': 2,
             'episode': '第1話 「チーズケーキ」　「モーニング再び」',
             'episode_number': 1,
         },
@@ -347,12 +348,12 @@ class AbemaTVIE(AbemaTVBaseIE):
                     )?
                 ''', r'\1', og_desc)
 
-        # canonical URL may contain series and episode number
+        # canonical URL may contain season and episode number
         mobj = re.search(r's(\d+)_p(\d+)$', canonical_url)
         if mobj:
             seri = int_or_none(mobj.group(1), default=float('inf'))
             epis = int_or_none(mobj.group(2), default=float('inf'))
-            info['series_number'] = seri if seri < 100 else None
+            info['season_number'] = seri if seri < 100 else None
             # some anime like Detective Conan (though not available in AbemaTV)
             # has more than 1000 episodes (1026 as of 2021/11/15)
             info['episode_number'] = epis if epis < 2000 else None
@@ -381,7 +382,7 @@ class AbemaTVIE(AbemaTVBaseIE):
                 self.report_warning('This is a premium-only stream')
             info.update(traverse_obj(api_response, {
                 'series': ('series', 'title'),
-                'season': ('season', 'title'),
+                'season': ('season', 'name'),
                 'season_number': ('season', 'sequence'),
                 'episode_number': ('episode', 'number'),
             }))