build(bazel): update bazel integration test to test secondary angular imports such as @angular/common/http (#24170)

PR Close #24170

integration/bazel/src/app.component.ts

@@ -0,0 +1,19 @@
+import {Component} from '@angular/core';
+import {HttpClient} from '@angular/common/http';
+import {Observable} from 'rxjs';
+import {map, startWith} from 'rxjs/operators';
+
+@Component({
+  selector: 'app-component',
+  template: `
+    <hello-world-app></hello-world-app>
+    <div>The current time is {{ time$ | async }}</div>
+  `})
+export class AppComponent {
+  constructor(private http: HttpClient) {
+  }
+
+  time$ = this.http.get('http://worldclockapi.com/api/json/pst/now').pipe(
+    map((result: any) => result.currentDateTime),
+    startWith(['...']));
+}