build: preserve symlinks when building nested CLI apps

Ensures that we don't accidentally resolve modules in the parent
monorepo node modules when we have a dedicated node modules folder
for a given CLI app.

It seems like the Webpack resolver jumps between those two node modules
and ends up in a cycle.

Author: devversion

src/apps/demo-app/angular.json

@@ -12,6 +12,7 @@
           "builder": "@angular-devkit/build-angular:browser",
           "options": {
             "aot": true,
+            "preserveSymlinks": true,
             "outputPath": "dist/browser",
             "index": "src/index.html",
             "main": "src/main.ts",

src/apps/hello-world/angular.json

@@ -12,6 +12,7 @@
           "builder": "@angular-devkit/build-angular:browser",
           "options": {
             "aot": true,
+            "preserveSymlinks": true,
             "outputPath": "dist",
             "index": "src/index.html",
             "main": "src/main.ts",