android-components does not bundle tooling-glean-gradle archive, only .pom file

For some reason our build of android-components only includes the .pom file for the tooling-glean-gradle component but not archive. However, that's needed otherwise the build breaks. We don't see issues right now (or only by accident as I did) because we silently use the one Mozilla provides as we are only overwriting things with .aars and .poms we actually provide.

So, we should a) fix this issue and b) make sure we don't have the .pom-only situation with other components either.