Prevent test failures from being hidden

Also remove listing the test result directory.

.gitlab-ci.yml

@@ -62,8 +62,7 @@ frontend-test:
   stage: test
   script:
     - npm install
-    - npm test || FAILED=true
-    - ls -Rl target/test-results
+    - npm test
   artifacts:
     reports:
       junit: target/test-results/TESTS-results-jest.xml