fix(server): echo request context on AdcpError error envelopes#560

bokelley merged 2 commits intomainadcontextprotocol/adcp-client-python:mainfrom

bokelley/issue-557-adcperror-context-echoadcontextprotocol/adcp-client-python:bokelley/issue-557-adcperror-context-echoCopy head branch name to clipboard