fix(ci): use if:always() on validate job to prevent skip bypass

Match the ci-behavior pattern: validate job always runs and explicitly
checks for failures. Without if:always(), a skipped or cancelled
dependency would skip validate too — meaning the required status check
never reports, allowing merge without CI passing.

Author: caio-pizzol

.github/workflows/ci-superdoc.yml

@@ -199,7 +199,12 @@ jobs:
         run: pnpm run test:cli
 
   validate:
+    if: always()
     needs: [build, unit-tests, cli-tests]
     runs-on: ubuntu-latest
     steps:
-      - run: echo "All checks passed"
+      - name: Check results
+        run: |
+          if [[ "${{ contains(needs.*.result, 'failure') }}" == "true" ]]; then
+            exit 1
+          fi