Previously, the `components-repo-unit-tests` CI job was temporarily
disabled due to a version mismatch between the `rules_nodejs`
dependency version on the two repos (angular/angular and
angular/components).

Now that both repos have been updated to a `rules_nodejs` version
>=2.0.0, we can re-enable the job and have `@angular/components` unit
tests run on every build.

PR Close #41816