fix edge case that new-created-paused action cannot receive further upda...

If an newly created Action is paused/blocked before its first update, its mPass will never be set to 0. It may cause it fail to receive further update after unpaused / unblocked.

I found this problem when I was implementing a action chain (use EVENT_STOP) today.
The chain worked fine until I put it inside a MOAICoroutine.