**Reproduce on main:**
- Run a DAG
- Rename the DAG
- Wait for dag file processor to remove the deleted DAG and add the new one. (Old Dag should not appear on the home page anymore)
- Go to the Browse DAGRUN page.
- Click on a DagRun of the deleted DAG, as if you want to see the 'details/grid' of that old dag run

More info and screenshots here:
https://github.com/notifications#discussioncomment-6898570

![image](https://github.com/apache/airflow/assets/14861206/7af81643-6278-4d90-a20f-6aa7b259ce59)



"""Clear an arbitrary number of task instances, including downstream dependencies."""
        try:
            selected_ti_count, downstream_ti_count = self._clear_task_instances(
                task_instances=task_instances, session=session, clear_downstream=True
            )
            session.commit()
            flash(
                f"Cleared {selected_ti_count} selected task instance{'s' if selected_ti_count > 1 else ''} "
                f"and {downstream_ti_count} downstream dependencies"
            )
        except Exception as e:
            flash(f'Failed to clear task instances: "{e}"', "error")
        self.update_redirect()
        return redirect(self.get_redirect())
    @action("muldelete", "Delete", "Are you sure you want to delete selected records?", single=False)
    @auth.has_access_dag_entities("DELETE", DagAccessEntity.TASK_INSTANCE)
    @action_logging
    def action_muldelete(self, items):
        self.datamodel.delete_all(items)
        self.update_redirect()
        return redirect(self.get_redirect())
    @provide_session
    def set_task_instance_state(