Fixes for handle_post_spawn proc

Fixes #4523 runtime error
Fixes Spawned in species 

Fixes Spawned in species not getting their handle_post_spawn proc being called.
Revert "Fixes Spawned in species "

This reverts commit d62c21dc3d0c3426f88aae2553b495bda0121cb1.
Fixes Spawned in species 

When species were spawned in they were not getting their handle_post_spawn proc called