Preplaced PLAYER_GOOD Imps counted as creatures rather than diggers, and do so permanently.

[PlebSupporter]

If PLAYER_GOOD is a Keeper and has imps placed on the map at mapstart, those imps will be counted to the maximum creature count for PLAYER_GOOD. Both future AND current imps will NOT count toward the max_count. This test started with four preplaced imps and after wiping them all out, the max-count still indicates four.

This isn't a visual bug and does permanently take up max_creature count for PLAYER_GOOD, reducing how many creatures they can attract.