fix cas username sync (#16942)
fix cas username sync (#16942)


VoiSmart/Rocket.Chat,subesokun/Rocket.Chat,subesokun/Rocket.Chat,subesokun/Rocket.Chat,Sing-Li/Rocket.Chat,VoiSmart/Rocket.Chat,VoiSmart/Rocket.Chat,Sing-Li/Rocket.Chat,Sing-Li/Rocket.Chat,subesokun/Rocket.Chat,Sing-Li/Rocket.Chat