build: add server-side rendering check for ground overlay (#19188)

We didn't have an SSR check for the new ground overlay component.

Author: crisbeto

src/universal-app/kitchen-sink/kitchen-sink.html

@@ -408,4 +408,12 @@ <h2>Google Map</h2>
     strokeColor: 'grey',
     strokeOpacity: 0.8
   }"></map-circle>
+  <map-ground-overlay
+    url="https://angular.io/assets/images/logos/angular/angular.svg"
+    [bounds]="{
+      east: 30,
+      north: 15,
+      west: 10,
+      south: -5
+    }"></map-ground-overlay>
 </google-map>