I'm pretty sure a turbofan would not be considered high performance for the purpose of the endorsement. To fly as PIC or SIC in a jet, you would have type specific training in that plane anyhow, so you would not need a HP endorsment to fly a jet. If you get a PIC or SIC checkout in a jet, you would still need a HP endorsment if you wanted to go fly a C182.
The HP endorsment is to address issues such as fuel injection, shock cooling, more right rudder required for p-factor, torque, etc. Those things do not apply on jets.