Revert "Temporarily increase max_days_without_success (#6390)" (#6455)

This PR adds the nightly CI check back and removes the temporarily increase length as nightlies were blocked due to failing changes in RAFT that are now resolved as of https://github.com/rapidsai/raft/actions/runs/13913530930

Authors:
  - Divye Gala (https://github.com/divyegala)
  - Simon Adorf (https://github.com/csadorf)

Approvers:
  - Bradley Dice (https://github.com/bdice)

URL: #6455

Author: divyegala

.github/workflows/pr.yaml

@@ -57,9 +57,6 @@ jobs:
         uses: rapidsai/shared-actions/check_nightly_success/dispatch@main
         with:
           repo: cuml
-          # TODO: remove this once upstream issues in RAFT are resolved on 11.4.
-          # The limit was temporarily increased to unblock work.
-          max_days_without_success: 30
   changed-files:
     secrets: inherit
     needs: telemetry-setup