Fixed: a dummy sprite of the player's overridden skin appeared when they bursted into chunks after dying from ice.

This addresses this ticket on the tracker: https://zandronum.com/tracker/view.php?id=2073

It appears that in AActor::SetState, the player's overridden skin (e.g. a weapon's preferred skin or a skin set from ACS) would still change the sprite of an actor inheriting from PlayerChunk when it shouldn't.