Update to ytdl-commit-8a158a9

[NHK] Use new API URL
6508688e88

Closes #2337, Closes #4063

yt_dlp/extractor/kaltura.py

@@ -382,5 +382,5 @@ class KalturaIE(InfoExtractor):
             'duration': info.get('duration'),
             'timestamp': info.get('createdAt'),
             'uploader_id': format_field(info, 'userId', ignore=('None', None)),
-            'view_count': info.get('plays'),
+            'view_count': int_or_none(info.get('plays')),
         }