Veterancy gives HP before ACU explosion damage (again)

Since the last game patch you can now survive ACU explosions because the veterancy bonus from the enemy ACU dying is given before the explosion damage, that should result in your death, is applied. This was fixed before, since it is very annoying and unpredictable, but must have been broken with the veterancy rewrite.

I tested in this replay: #19374299

We're already on it: https://github.com/FAForever/fa/issues/4750

We've found the cause, this weekend it will be shipped to the release branch

A work of art is never finished, merely abandoned