fix(compiler): remove i18n markup even if no translations (#17999)

Fixes #11042

packages/compiler-cli/integrationtest/alt/src/bootstrap.ts

@@ -0,0 +1,12 @@
+/**
+ * @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 {BasicComp} from '../../src/basic';
+import {MainModuleNgFactory} from './module.ngfactory';
+
+MainModuleNgFactory.create(null).instance.appRef.bootstrap(BasicComp);