made InterruptTest more robust
made InterruptTest more robust

should resolve this failure:
https://github.com/pythonnet/pythonnet/pull/1392/checks?check_run_id=1944113649
related to https://github.com/pythonnet/pythonnet/pull/1337

pythonnet/pythonnet,AlexCatarino/pythonnet,AlexCatarino/pythonnet,pythonnet/pythonnet,AlexCatarino/pythonnet,QuantConnect/pythonnet,AlexCatarino/pythonnet,pythonnet/pythonnet,QuantConnect/pythonnet,QuantConnect/pythonnet