fix: fix integration test automated run (#472)

Integration tests triggering: 
Plan : to skip them for PRs, but we wanted to run them on main and I'd
like to be able to trigger them manually too

This would now satisfies requirements:
Req 1a: PRs with /ok to test xyz will SKIP integration tests (they use
push events to pull-request/* branches, not schedule or
workflow_dispatch)
Req 1b: Merges to main won't automatically run integration tests (also
push events), but scheduled runs will catch them
Req 2: Manual workflow_dispatch triggers from any branch will run
integration tests
Req 3: No more environment protection errors when triggering from
feature branches

The key insight is that by checking github.event_name directly instead
of relying on is_ci_workload, we:
- Don't require the workflow to be on main branch for manual triggers
- Explicitly exclude PR runs (which are push events)
- Allow scheduled runs to work as before

<img width="1062" height="400" alt="image"
src="https://github.com/user-attachments/assets/bc85561c-5b47-4cf3-bed0-8e4de8c8687f"
/>

<img width="324" height="267" alt="image"
src="https://github.com/user-attachments/assets/4830137b-ef9a-45f5-b05f-c082c0dd0d56"
/>



Fixed integration tests triggering logic:
- Skip on PRs (including /ok to test)
- Run on main branch pushes (when PRs merge)
- Run on scheduled cron jobs (daily)
- Run on manual workflow_dispatch triggers (from any branch)



Tested: 
For:
- Use workflow from: pablo-garay/fix-integration-test-automated-run2
- Branch to run tests on:
pablo-garay/fix-integration-test-automated-run2
https://github.com/NVIDIA-NeMo/Evaluator/actions/runs/19550694641
another test:
https://github.com/NVIDIA-NeMo/Evaluator/actions/runs/19552356088/job/55986938425

---------

Signed-off-by: Pablo Garay <[email protected]>

Author: pablo-garay

.github/workflows/cicd-main.yml

@@ -160,10 +160,13 @@ jobs:
   cicd-integration-tests:
     needs:
       - cicd-unit-tests-nemo-evaluator
-    environment: main
     runs-on: self-hosted-nemo
     if: |
-      needs.pre-flight.outputs.is_ci_workload == 'true'
+      (
+        github.event_name == 'schedule'
+        || github.event_name == 'workflow_dispatch'
+        || (github.event_name == 'push' && github.ref == 'refs/heads/main')
+      )
       && !cancelled()
     name: integration-tests
     steps: