[Fix] 1676 - Horde Damage Fix (#1678)

* Fixed so that horde damage reduction is only applied to the standard attack

* Changed to just adding 'isStandardAttack' in adversary data prep

* .

module/data/actor/adversary.mjs

@@ -190,6 +190,10 @@ export default class DhpAdversary extends DhCreature {
         }
     }
 
+    prepareDerivedData() {
+        this.attack.roll.isStandardAttack = true;
+    }
+
     _getTags() {
         const tags = [
             game.i18n.localize(`DAGGERHEART.GENERAL.Tiers.${this.tier}`),