[RGSP] Wishing Well Ghost child turned back to human/No more ghost children

Hi, these are actually two separate bugs, with two separate causes.

First Error is caused by loot_WishingWell_Random_GhostType listing all (I think) base game death types without limiting the ones allowed to children, so when they come back to life and get a random ghost trait, they're likely to get one that doesn't work and it gets skipped, resulting in them coming back to life.

Second Error is caused by template_WishingWell_Ghost trying to assign the trait trait_ghost_Laugher to child ghosts, and that's no longer available to children.

I've made a bug fix for both bugs (available here). For the child ghosts coming back to life, I've edited the random weighted loot to give children a weight of zero for the ghosts types that aren't valid for children. For the child ghosts spawning as living children, I switched trait_ghost_Laugher to trait_ghost_Drown (as the ghost type available to children that's probably least likely to kill off the rest of the household).