chore: adjust hero card sizes

Author: capJavert

__tests__/posts.ts

@@ -1045,7 +1045,7 @@ describe('hero field', () => {
       id: expect.any(String),
       headline: 'Breaking out',
       significance: 'breakout',
-      size: 3,
+      size: 2,
       highlightedAt: expect.any(String),
     });
   });

src/common/postHero.ts

@@ -12,6 +12,6 @@ export const POST_HERO_SIZES: Record<PostHeroSignificance, number> = {
   major: 3,
   notable: 2,
   routine: 1,
-  breakout: 3,
+  breakout: 2,
   evergreen: 2,
 };