Ensure JS tests don't fail silently

[brian-smith-tcril]

While working on the node 18 upgrade, I was able to get the JS tests CI check to pass with the application in a non-working state. After a bit of investigation, I found there were a couple test suites that weren't running due to webpack build issues. We should ensure that a test suite that doesn't run due to a build issue fails CI as opposed to silently passing.