[python] don't fail on response body consumption in _failsafe_deserialize#3148

msyyc wants to merge 4 commits intomainAzure/autorest.python:mainfrom

auto-iscai-msft-python/failsafeDeserializeFixAzure/autorest.python:auto-iscai-msft-python/failsafeDeserializeFixCopy head branch name to clipboard