Deploy to Github pages should also build and test

I suspect this was missed, or the expectation was that deploy would
build and test, and then deploy-with-pages would follow in it's wake.

But now deploy fails I think that's no longer true.

Let's move thingsa cross to build-to-pages and then we can remove
deploy.yml

.github/workflows/deploy-to-pages.yaml

@@ -14,6 +14,10 @@ concurrency:
   cancel-in-progress: false
 
 jobs:
+  build:
+    uses: ./.github/workflows/test.yaml
+    with:
+      upload-artifact: true
   deploy:
     environment:
       name: github-pages