plugins.artetv: only pick the first variant of the stream (#3228)
plugins.artetv: only pick the first variant of the stream (#3228)


bastimeyer/streamlink,gravyboat/streamlink,bastimeyer/streamlink,beardypig/streamlink,melmorabity/streamlink,melmorabity/streamlink,streamlink/streamlink,beardypig/streamlink,chhe/streamlink,gravyboat/streamlink,chhe/streamlink,streamlink/streamlink