Increase timeout for displaying welcome interstitial for new users (e…

…lastic#110498)

src/plugins/home/public/application/components/home.js

@@ -68,7 +68,7 @@ export class Home extends Component {
         if (this.state.isLoading) {
           this.setState({ isWelcomeEnabled: false });
         }
-      }, 500);
+      }, 10000);
 
       const { isNewInstance } = await this.props.http.get('/internal/home/new_instance_status');