fix: fsm events failed when register task (#2225)

fix: fsm events failed when register task.

When there is a high concurrency of registration tasks,
it can cause error InTransitionError, because of looplab/fsm library
uses optimistic locking to implement state transitions,
refer to https://github.com/looplab/fsm/blob/main/fsm.go#L312.

Signed-off-by: Gaius <gaius.qi@gmail.com>

scheduler/service/service_v1.go

@@ -662,7 +662,7 @@ func (v *V1) triggerTask(ctx context.Context, req *schedulerv1.PeerTaskRequest,
 
 	// If the task triggers the TaskEventDownload failed and it has no available peer,
 	// let the peer do the scheduling.
-	if !task.FSM.Is(resource.TaskStateRunning) {
+	if task.FSM.Can(resource.TaskEventDownload) {
 		if err := task.FSM.Event(ctx, resource.TaskEventDownload); err != nil {
 			peer.Log.Errorf("task fsm event failed: %s", err.Error())
 			return err