[ADF-2703] Info Drawer - Header does not navigate to name of default tab. (#3192)

* Selected Tab is getting highlited if value of selectedIndex is passed to adf-info-drawer.

lib/core/viewer/components/viewer.component.ts

@@ -688,4 +688,9 @@ export class ViewerComponent implements OnChanges, OnInit, OnDestroy {
     private wait(ms: number): Promise<any> {
         return new Promise(resolve => setTimeout(resolve, ms));
     }
+
+    getSideBarStyle(): string {
+        return this.sidebarPosition === 'left' ? 'adf-viewer__sidebar__left' : 'adf-viewer__sidebar__right';
+    }
+
 }