fix: allow replacing worker client on default runtime#1707

Sakshamm-Goyal wants to merge 2 commits into

temporalio:maintemporalio/sdk-python:mainfrom

Sakshamm-Goyal:agent/fix-worker-lazy-runtime-clientSakshamm-Goyal/sdk-python:agent/fix-worker-lazy-runtime-clientCopy head branch name to clipboard