Add warning log when rejecting request with unknown/expired session ID#2212

rameshreddy-adutla wants to merge 2 commits intomodelcontextprotocol:mainmodelcontextprotocol/python-sdk:mainfrom

rameshreddy-adutla:fix/2204-log-unknown-session-idrameshreddy-adutla/python-sdk:fix/2204-log-unknown-session-idCopy head branch name to clipboard