- Move `followerready`'s first set from `K_SetFollowerByNum` (which isn't called if your follower is -1, the exact case Goddess is supposed to help us with) to `G_UpdatePlayerPreferences`, which is always called whenever the follower ID is validated on join
- Cache "Goddess"' followerskin ID by cribbing from `r_skins` and `R_DefaultBotSkin`