Make Creature::GetAttacks const

src/Battling/Models/Creature.hpp

@@ -181,7 +181,7 @@ namespace CreatureLib::Battling {
         void RemoveVolatileScript(BattleScript* non_null script);
         bool HasVolatileScript(const ArbUt::BasicStringView& name) const;
 
-        const ArbUt::OptionalUniquePtrList<LearnedAttack>& GetAttacks() noexcept { return _attacks; }
+        const ArbUt::OptionalUniquePtrList<LearnedAttack>& GetAttacks() const noexcept { return _attacks; }
         bool HasAttack(const ArbUt::StringView& name) {
             for (auto& a : _attacks) {
                 if (a == nullptr)