Hi! I'm around the same as you- day 11 just starting for me.
It sounds like it hasn't made any difference, and you've nothing to worry about. The main thing I'd be worried about would be restarting digestion, because this can put a quick end to a long fast. If this hasn't happened, I doubt it's affected ketosis either- there just isn't enough nutrition in a thin infusion of boiled leaves!
I've had two fasts end prematurely because of tea; one long one, and one shorter. I went to my sisters and to be polite, accepted her offer of a cup. I drank it with milk, thinking there wouldn't be a problem, but within hours, hunger returned. I'm guessing the small amount of milk with enough to kickstart digestion. So now I'm very careful, but it sounds like this hasn't happened in your case.