message: docs: add default AOT to migrating projects to Ivy
  Followup to
  PR Close
diff: @@ -32,4 +32,24 @@ To update an existing project to use Ivy, set the `enableIvy` option in the `ang
  }
  ```
  -To stop using the Ivy compiler, set `enableIvy` to `false` in `tsconfig.app.json`, or remove it completely.
  +AOT compilation with Ivy is faster and should be used by default. In the `angular.json` workspace configuration file, set the default build options for your project to always use AOT compilation.
  +
  +```json
  +{
  + "projects": {
  + "my-existing-project": {
  + "architect": {
  + "build": {
  + "options": {
  + ...
  + "aot": true,
  + }
  + }
  + }
  + }
  + }
  +}
  +
  +
  +To stop using the Ivy compiler, set `enableIvy` to `false` in `tsconfig.app.json`, or remove it completely. Also remove `"aot": true` from your default build options if you didn't have it there before.
  +
  \ No newline at end of file
  