build: rename cli-hello-world-ivy test to cli-hello-world-ivy-compat (#28372)

There are two ways to bootstrap an Ivy app: with `platformBrowserDynamic().bootstrapModule` and `renderComponent`.

To distinguish between these two approaches we call the `platformBrowserDynamic().bootstrapModule` way `ivy-compat` and the `renderComponent` way just `ivy`.

PR Close #28372

integration/cli-hello-world-ivy-compat/src/main.ts

@@ -0,0 +1,12 @@
+import { enableProdMode } from '@angular/core';
+import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
+
+import { AppModule } from './app/app.module';
+import { environment } from './environments/environment';
+
+if (environment.production) {
+  enableProdMode();
+}
+
+platformBrowserDynamic().bootstrapModule(AppModule)
+  .catch(err => console.error(err));