reset last_rr_sent on error
reset last_rr_sent on error

Indicate that setting the RR was a failure and that hitting the API should be retried (in the case where the errcode !== "M_UNRECOGNISED")

matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,aperezdc/matrix-react-sdk,aperezdc/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,aperezdc/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,aperezdc/matrix-react-sdk