[FIX] If InternalHubot_Username is undefined then rocket.cat should be default bot (#16371)
[FIX] If InternalHubot_Username is undefined then rocket.cat should be default bot (#16371)


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