chore: update GitHub Actions workflow to separate build and test steps for clarity

Author: wiktoriavh

.github/workflows/test.yml

@@ -35,6 +35,9 @@ jobs:
       - name: Lint
         run: npm run lint
 
-      - name: Build and test
+      - name: Build
+        run: npm run build:ci
+
+      - name: Test
         run: npm run test:ci