fix: correct include_contents behavior in ADK web (fixes google#3535)#4492

dalagadenilesh wants to merge 2 commits intogoogle:maingoogle/adk-python:mainfrom

dalagadenilesh:fix/include_contant_to_nonedalagadenilesh/adk-python:fix/include_contant_to_noneCopy head branch name to clipboard