Implement isCursed for new enchantments

By: Senmori <thesenmori@gmail.com>

paper-api/src/main/java/org/bukkit/enchantments/EnchantmentWrapper.java

@@ -49,6 +49,11 @@ public class EnchantmentWrapper extends Enchantment {
         return getEnchantment().isTreasure();
     }
 
+    @Override
+    public boolean isCursed() {
+        return getEnchantment().isCursed();
+    }
+
     @Override
     public boolean conflictsWith(Enchantment other) {
         return getEnchantment().conflictsWith(other);