Makes no difference when they blew the whistle. Clock stoppage is reviewable, and on review, the clock still said 1 second when the ball hit the ground. Blowing the whistle late was an error, and the replay corrected the error.
If the ball had been thrown higher or further, they would have lost.
On the other hand, there normally is a delay between when clock should stop and when it actually does. Usually earlier in a game, nobody complains when a second or two is lost.