ci: ensure maintainer approval job is evaluated correctly on push events

- The require-maintainer-approval job was being skipped on push event
    when upstream jobs (verify-signed-commits and check-labels) were skipped,
    even though detect-changes job successfully marked protected files as changed.
  - GitHub Actions may skip dependent jobs due to upstream skipped states before
    evaluating custom conditions.
  - Adding always() ensures the job condition is evaluated regardless of
    the status of upstream jobs, while still enforcing the rule that the job
    only runs when protected_files_changed == true.

Signed-off-by: Shubhika Garg <shubhika.garg@openairinterface.org>

.github/workflows/jenkins-dispatch.yml

@@ -109,8 +109,9 @@ jobs:
   require-maintainer-approval:
     needs: detect-changes
 
-    if: needs.detect-changes.outputs.protected_files_changed == 'true'
-
+    if: |
+      always() &&
+      needs.detect-changes.outputs.protected_files_changed == 'true'
     runs-on: ubuntu-24.04
 
     environment: