Alan Agius b5737efae8 fix(@angular/cli): handle extended schematics when retrieving aliases
Previously base collections where not being taken into account and the recent changes caused an exception

```
An unhandled exception occurred: Cannot destructure property 'aliases' of 'collection.description.schematics[schematicName]' as it is undefined.
```

See: https://angular-team.slack.com/archives/CHEEH2LCA/p1674122139247359
2023-01-19 22:12:26 +00:00
..

Angular CLI - The CLI tool for Angular.

The sources for this package are in the Angular CLI repository. Please file issues and pull requests against that repository.

Usage information and reference details can be found in repository README file.