Perform deep comparison for card data when receiving new props (#9270)

Fixes #9226

app/javascript/mastodon/features/status/components/card.js

@@ -73,7 +73,7 @@ export default class Card extends React.PureComponent {
   };
 
   componentWillReceiveProps (nextProps) {
-    if (this.props.card !== nextProps.card) {
+    if (!this.props.card.equals(nextProps.card)) {
       this.setState({ embedded: false });
     }
   }