fix(streamable-http): map stale session 401 to status-aware error#709

adam-r-kowalski wants to merge 1 commit intomodelcontextprotocol:mainmodelcontextprotocol/rust-sdk:mainfrom

adam-r-kowalski:fix/rmcp-stale-session-error-mappingadam-r-kowalski/rust-sdk:fix/rmcp-stale-session-error-mappingCopy head branch name to clipboard