ci: re-enable disabled components-repo-unit-tests job (#35123)

We temporarily disabled the components-repo-unit-tests job as part of
a ngcc PR: #35079. This was necessary because the components repository
used postinstall patches for `@angular/compiler-cli/ngcc`. Due to
changes in ngcc, these patches no longer worked and caused the
`components-repo-unit-tests` job to fail.

The postinstall patch has been removed in the components repo, so the
job can be re-enabled.

PR Close #35123

.circleci/config.yml

@@ -869,10 +869,9 @@ workflows:
             - build-npm-packages
             - build-ivy-npm-packages
             - legacy-unit-tests-saucelabs
-      # FIXME - uncomment this job once https://github.com/angular/components/pull/18355 lands
-      # - components-repo-unit-tests:
-      #     requires:
-      #       - build-npm-packages
+      - components-repo-unit-tests:
+          requires:
+            - build-npm-packages
       - test_zonejs:
           requires:
             - setup