message: Support RTL language in message composer
diff: @@ -566,6 +566,7 @@ export default class BasicMessageEditor extends React.Component {
  aria-haspopup="listbox"
  aria-expanded={Boolean(this.state.autoComplete)}
  aria-activedescendant={completionIndex >= 0 ? generateCompletionDomId(completionIndex) : undefined}
  + dir="auto"
  />
  </div>);
  }
  