Fix Aftermath not working (#1209)

src/data/ability.ts

@@ -2641,7 +2641,7 @@ export class PostFaintContactDamageAbAttr extends PostFaintAbAttr {
     if (move.getMove().checkFlag(MoveFlags.MAKES_CONTACT, attacker, pokemon)) {
       const cancelled = new Utils.BooleanHolder(false);
       pokemon.scene.getField(true).map(p=>applyAbAttrs(FieldPreventExplosiveMovesAbAttr, p, cancelled));
-      if (cancelled) {
+      if (cancelled.value) {
         return false;
       }
       attacker.damageAndUpdate(Math.ceil(attacker.getMaxHp() * (1 / this.damageRatio)), HitResult.OTHER);