Refactor Home feed pager rendering logic (#2768)

* Use new persistence API for selected feed

* Refactor Home feeds pager data source

src/state/persisted/legacy.ts

@@ -111,6 +111,7 @@ export function transform(legacy: Partial<LegacySchema>): Schema {
     },
     hiddenPosts: defaults.hiddenPosts,
     externalEmbeds: defaults.externalEmbeds,
+    lastSelectedHomeFeed: defaults.lastSelectedHomeFeed,
   }
 }