Add a note for why oob_data isn't threaded yet
Add a note for why oob_data isn't threaded yet

See https://github.com/vector-im/element-web/issues/15157
matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk