[Glitch] Include preview cards in status entity in REST API

Port 795f0107d2 to glitch-soc

app/javascript/flavours/glitch/features/status/containers/card_container.js

@@ -2,7 +2,7 @@ import { connect } from 'react-redux';
 import Card from '../components/card';
 
 const mapStateToProps = (state, { statusId }) => ({
-  card: state.getIn(['cards', statusId], null),
+  card: state.getIn(['statuses', statusId, 'card'], null),
 });
 
 export default connect(mapStateToProps)(Card);