Trigger OnRemove on a Creatures scripts when it gets switched out.

src/Battling/Models/BattleSide.cpp

@@ -1,6 +1,7 @@
 #include "BattleSide.hpp"
 #include "../EventHooks/EventDataClasses.hpp"
 #include "Battle.hpp"
+#include "../ScriptHandling/ScriptMacros.hpp"
 
 using namespace CreatureLib::Battling;
 
@@ -52,6 +53,7 @@ void BattleSide::SetChoice(BaseTurnChoice* choice) {
 void BattleSide::SetCreature(ArbUt::OptionalBorrowedPtr<Creature> creature, uint8_t index) {
     auto old = _creatures[index];
     if (old.HasValue()) {
+        HOOK(OnRemove, this);
         old.GetValue()->SetOnBattleField(false);
     }
     _creatures[index] = creature;