test(@nguniversal/builders): add E2E for critical css inlining

Author: alan-agius4

integration/express-engine-ivy-hybrid/angular.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
+  "$schema": "../../node_modules/@angular/cli/lib/config/schema.json",
   "version": 1,
   "newProjectRoot": "projects",
   "projects": {
@@ -61,7 +61,13 @@
                   "with": "src/environments/environment.prod.ts"
                 }
               ],
-              "optimization": true,
+              "optimization": {
+                "styles": {
+                  "inlineCritical": true,
+                  "minify": true
+                },
+                "scripts": true
+              },
               "outputHashing": "all",
               "sourceMap": false,
               "namedChunks": false,