Enable FF skip_dag_manual_and_delayed_jobs by default

It is enabled on GitLab.com

changelogs/unreleased/297240-enable-skip_dag_manual_and_delayed_jobs.yml

+---
+title: Fix not skipped manual and delayed DAG jobs
+merge_request: 54073
+author:
+type: fixed

config/feature_flags/development/skip_dag_manual_and_delayed_jobs.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/297240
 milestone: '13.8'
 type: development
 group: group::pipeline authoring
-default_enabled: false
+default_enabled: true