Re-enable ProjectTemplates tests

- should be mandatory for changes in this branch

Author: dougbu

.azure/pipelines/ci.yml

@@ -446,7 +446,6 @@ stages:
         displayName: Pack Templates
       - script: ./src/ProjectTemplates/build.cmd -ci -test -NoRestore -NoBuild -NoBuilddeps "/p:RunTemplateTests=true /bl:artifacts/log/template.test.binlog"
         displayName: Test Templates
-        continueOnError: true # Continue on error to avoid issues with stabilized build.
       artifacts:
       - name: Windows_Test_Templates_Logs
         path: artifacts/log/