fix: add extension code for po errors from websockets#2792

SkArchon merged 3 commits into

mainwundergraph/cosmo:mainfrom

milinda/eng-9347-router-add-extension-error-code-for-persisted-query-notwundergraph/cosmo:milinda/eng-9347-router-add-extension-error-code-for-persisted-query-notCopy head branch name to clipboard