Why is the Elder Wand aligned with Harry and not Voldemort?

I get that Draco was the true master of the elder wand, and by disarming Draco, Harry becomes the wands true master.

However...

When Harry is hit by Voldemort's killing curse in the forbidden forest, does Voldemort not, technically, defeat Harry? If that's the case, shouldn't the wand see Voldemort defeating it's master and then switch allegiance to Voldemort?