fix(@angular-devkit/build-angular): fix error with inline styles when…

… running extract-i18n

When extracting inline styles in Angular 12 there seems to be no CSS
loader specified and there will be something like the following message:

  angular-resource://:2:4 - Error: Module parse failed: Unexpected token (2:4)
  You may need an appropriate loader to handle this file type, currently no
  loaders are configured to process this file. See
  https://webpack.js.org/concepts#loaders
  |
  >     :host {
  |       display: block;
  |       height: 0;

This change adds a `webpack.NormalModuleReplacementPlugin` in extract-i18n for
`angular-resource://` handling them as the non inline styles are handled.

closes: #20750

packages/angular_devkit/build_angular/src/extract-i18n/index.ts

@@ -237,6 +237,10 @@ export async function execute(
             /\.(css|scss|sass|styl|less)$/,
             path.join(__dirname, 'empty-export-default.js'),
           ),
+          new webpack.NormalModuleReplacementPlugin(
+            /^angular-resource:\/\//,
+            path.join(__dirname, 'empty-export-default.js'),
+          ),
         ],
       });