Apply a hot op from the broadcast stream, appending one frame to the hot log. # Errors Returns [`Error::Crdt`] if the op is rejected by the session, or an [`Error::Container`] / [`Error::Codec`] if persisting the hot frame fails. On a persist failure the session has already advanced past what the working copy reflects, so the caller should treat the document as needing re-persist (mirrors [`stage
(&mut self, op: HotOp)
source not stored for this graph (policy: none)