Fix tevo with real parameters
Created by: PhilipVinc
If you run Examples/Dyanamics/Ising1d.py
with RBMModPhase
Ansatz which has real parameters but complex output, TDVP breaks down because the gradient is complex but we need to take the real part.
I don't have the time, but if somebody could take this and add a test would be great.
cc @femtobit