fix(compiler): walk third party modules (#12453)

fixes #11889
fixes #12428

modules/@angular/compiler-cli/integrationtest/src/comp_using_3rdp.ts

@@ -0,0 +1,18 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {Component} from '@angular/core';
+
+@Component({
+  selector: 'use-third-party',
+  template: '<third-party-comp [thirdParty]="title"></third-party-comp>' +
+      '<another-third-party-comp></another-third-party-comp>',
+})
+export class ComponentUsingThirdParty {
+  title: string = 'from 3rd party';
+}