ci:Make sure that tests on VSTS get marked as failed if they fail (#14734)

vsts.yml

@@ -57,7 +57,6 @@ jobs:
     condition: and(succeeded(), ne(variables['ELECTRON_RELEASE'], '1'))
 
   - bash: |
-      set +e
       cd src
       # Make sure there aren't any Electron processes left running from previous tests
       killall Electron