Add a sticky sidebar ad to fill empty space on the homepage

Integrates a new `SidebarAd` component into the homepage layout, making it sticky and ensuring ad containers collapse when ads fail to load. Updates `AdSense` component to track ad loading status.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 517dfa7b-26ac-463d-a6e1-a58c6df97188
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: 3321a963-9238-411a-b2fa-c960a9f73030
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/f209e72a-0939-48fa-84fc-57854de71967/517dfa7b-26ac-463d-a6e1-a58c6df97188/ls5p9ni
Replit-Helium-Checkpoint-Created: true

client/src/pages/home.tsx

@@ -7,7 +7,7 @@ import { Eye, Play, Images } from "lucide-react";
 import { Skeleton } from "@/components/ui/skeleton";
 import Header from "@/components/header";
 import Footer from "@/components/footer";
-import AdSense, { ArticleCardAd, MultiplexAd } from "@/components/adsense";
+import AdSense, { ArticleCardAd, MultiplexAd, SidebarAd } from "@/components/adsense";
 import { PhotoGalleryWidget } from "@/components/photo-gallery";
 import { HoroscopeWidget } from "@/components/horoscope-widget";
 import { RecipeWidget } from "@/components/recipe-widget";
@@ -573,6 +573,7 @@ export default function Home() {
           </div>
           <div className="lg:col-span-1">
             {popular && popular.length > 0 && <TopStoriesList articles={popular} />}
+            <SidebarAd />
           </div>
         </div>