adding: log event for auto pause (#38243)

airflow/models/dagrun.py

@@ -53,6 +53,7 @@
 from airflow.configuration import conf as airflow_conf
 from airflow.exceptions import AirflowException, RemovedInAirflow3Warning, TaskNotFound
 from airflow.listeners.listener import get_listener_manager
+from airflow.models import Log
 from airflow.models.abstractoperator import NotMapped
 from airflow.models.base import Base, StringID
 from airflow.models.expandinput import NotFullyPopulated
@@ -594,6 +595,15 @@ def _check_last_n_dagruns_failed(self, dag_id, max_consecutive_failed_dag_runs,
                 .values(is_paused=True)
                 .execution_options(synchronize_session="fetch")
             )
+            session.add(
+                Log(
+                    event="paused",
+                    dag_id=self.dag_id,
+                    owner="scheduler",
+                    owner_display_name="Scheduler",
+                    extra=f"[('dag_id', '{self.dag_id}'), ('is_paused', True)]",
+                )
+            )
         else:
             self.log.debug(
                 "Limit of consecutive DAG failed dag runs is not reached, DAG %s will not be paused.",