Add lang attribute to image description textarea and poll option field (#23293)

app/javascript/mastodon/features/compose/containers/poll_form_container.js

@@ -10,6 +10,7 @@ import {
 const mapStateToProps = state => ({
   suggestions: state.getIn(['compose', 'suggestions']),
   options: state.getIn(['compose', 'poll', 'options']),
+  lang: state.getIn(['compose', 'language']),
   expiresIn: state.getIn(['compose', 'poll', 'expires_in']),
   isMultiple: state.getIn(['compose', 'poll', 'multiple']),
 });