fix(): update main.server.ts to improve startup robustness (#5483)

Author: michaelmkraus

showcases/angular-ssr-showcase/src/main.server.ts

@@ -1,7 +1,11 @@
-import { bootstrapApplication } from '@angular/platform-browser';
+import {
+  bootstrapApplication,
+  BootstrapContext
+} from '@angular/platform-browser';
 import { AppComponent } from '../../angular-showcase/src/app/app.component';
 import { config } from './app/app.config.server';
 
-const bootstrap = async () => bootstrapApplication(AppComponent, config);
+const bootstrap = (context: BootstrapContext) =>
+  bootstrapApplication(AppComponent, config, context);
 
 export default bootstrap;