Doesn't send RESUMED email if paused while late

[jikamens]

If a canary goes late, sends out a LATE email, and then is paused, it never sends out a followup email indicating that it has resumed when it starts reporting again and the pause is automatically cancelled. This leaves someone who is watching the state of the canary via their email notifications thinking that the canary is still late when in fact it's reporting again.

I think removing the late status from a canary when it's paused is probably the right thing to do, so I don't think it should actually send out a RESUMED email in this context; I think it would be more correct to send out a new type of notification specifically for the "paused while late" event which makes it clear that's what happened.