KeyboardInterrupt handling in worker.py to prevent showing stacktrace and breaking cecli

[szmania]

Issue

KeyboardInterrupt handling in worker.py to prevent showing stacktrace and breaking cecli

Version and model info

No response

[szmania]

#528

[szmania]

Moving this back to in progress, testing a new fix, the issue persists. I will be testing for at least a few more days to ensure I've fixed it this time :)

[szmania]

currently testing this, dev is done