mcp: report an error when a sampling or elicitation handler returns nil - #1304

mcp: report an error when a sampling or elicitation handler returns nil#1304

guglielmo-san merged 7 commits into

modelcontextprotocol:mainmodelcontextprotocol/go-sdk:mainfrom

po-et:fix/client-nil-handler-resultspo-et/go-sdk:fix/client-nil-handler-resultsCopy head branch name to clipboard