chore: post highlight cards exp key

Author: capJavert

packages/shared/src/lib/featureManagement.ts

@@ -215,7 +215,7 @@ export const featureLayoutV2 = new Feature('layout_v2', false);
 export const featureEngagementBarV2 = new Feature('engagement_bar_v2', false);
 
 export const featurePostHighlightCards = new Feature(
-  'post_highlight_cards',
+  'post_highlight_cards_v2',
   false,
 );