refactor: downgrade unhandled notification logging from error to warn#457

tzolov merged 1 commit intomodelcontextprotocol:mainmodelcontextprotocol/java-sdk:mainfrom

tzolov:missing-notificaiton-handler-logging-warningtzolov/mcp-java-sdk:missing-notificaiton-handler-logging-warningCopy head branch name to clipboard