[youtube] Login is not needed for `:ytrec`

yt_dlp/extractor/youtube.py

@@ -4078,6 +4078,7 @@ class YoutubeRecommendedIE(YoutubeFeedsInfoExtractor):
     IE_DESC = 'YouTube.com recommended videos, ":ytrec" for short (requires authentication)'
     _VALID_URL = r'https?://(?:www\.)?youtube\.com/?(?:[?#]|$)|:ytrec(?:ommended)?'
     _FEED_NAME = 'recommended'
+    _LOGIN_REQUIRED = False
     _TESTS = [{
         'url': ':ytrec',
         'only_matching': True,