If my TV is off and you press the YouTube or Netflix button on the remote, it will power on the TV and launch the app. How can I disable this so that only the power button controls the power to the TV?

Usecase: I’ve remapped the YouTube button to YouTube Kids but when used to power on the TV it sometimes still launches the original YouTube app - I’d rather have the kids turn on the tv and then press YouTube as I’ve had no issues with the remapping once the tv is already on.