fix(savepoint): wrong savepoint path in download savepoint route

internal/managed_job/savepoint.go

@@ -89,3 +89,7 @@ func (job ManagedJob) TriggerSavepoint() error {
 	err = job.trackSavepoint()
 	return err
 }
+
+func (job ManagedJob) GetLastSavepointPath() *string {
+	return job.def.Status.LastSavepointPath
+}