It seems there is no 'kill' functionality to stop the running flow that got into endless loop or got stuck if it was started by Cloud Flow (in either Attended or Unattended mode).
I had a run that got into endless loop and Safe Stop did not work. I cancelled the parent Cloud Flow, but desktop flow continued running. I was only able to 'kill' it by shutting down the machine it was running on.
I know I should fix the flow to prevent this, but once it happens, I don't have means to stop it from Power Automate (cloud) side.
Is there anything that I'm missing?