message: Import React to appease IDE linter
  Apparently we shouldn't be using global references to React, so import it.
diff: @@ -17,6 +17,7 @@ limitations under the License.
  import { Room } from "matrix-js-sdk/src/models/room";
  import { IContent, MatrixEvent } from "matrix-js-sdk/src/models/event";
  import { logger } from "matrix-js-sdk/src/logger";
  +import React from "react";
  import Exporter from "./Exporter";
  import { formatFullDateNoDay } from "../../DateUtils";
  