fix(eval): support get_agent_async in adk eval - #4413

fix(eval): support get_agent_async in adk eval#4413

ftnext wants to merge 3 commits into

google:maingoogle/adk-python:mainfrom

ftnext:adk-eval-get-agent-asyncftnext/google-adk-python:adk-eval-get-agent-asyncCopy head branch name to clipboard