test(ngcc): build zone.js from source in scripts/build-packages-dist.sh (#33733)

In #33046, internal uses of `zone.js` were switched to reference it
directly from source (built with Bazel) instead of npm. As a result, the
necessary scripts were updated to build `zone.js` as necessary. However,
some `integration/**/debug-test.sh` scripts were missed (apparently
because they are not used on CI, but only locally as helpers for
debugging the integration projects).

This commit updates the `scripts/build-packages-dist.sh` script to also
build `zone.js`, so that other scripts (such as the various
`debug-test.sh` scripts) can use it.

PR Close #33733

.circleci/config.yml

@@ -509,6 +509,7 @@ jobs:
           root: *workspace_location
           paths:
             - ng/dist/packages-dist
+            - ng/dist/zone.js-dist
 
       # Save dependencies and bazel repository cache to use on subsequent runs.
       - save_cache: