Revert "disable tests for now in prod"

This reverts commit eb68f9de.

build/tfs/darwin/product-build-darwin.yml

@@ -26,7 +26,7 @@ steps:
 
 - script: |
     set -e
-    # ./scripts/test.sh --build --tfs "Unit Tests"
+    ./scripts/test.sh --build --tfs "Unit Tests"
     APP_NAME="`ls $(agent.builddirectory)/VSCode-darwin | head -n 1`"
     # yarn smoketest -- --build "$(agent.builddirectory)/VSCode-darwin/$APP_NAME"
   name: test