Fix creeper not having loot (#1790)

purpur-server/minecraft-patches/sources/net/minecraft/world/entity/monster/Creeper.java.patch

@@ -8,7 +8,7 @@
  
      public Creeper(final EntityType<? extends Creeper> type, final Level level) {
          super(type, level);
-@@ -159,6 +_,26 @@
+@@ -159,6 +_,27 @@
          return false; // CraftBukkit
      }
  
@@ -29,6 +29,7 @@
 +        if (!this.exploding && this.level().purpurConfig.creeperExplodeWhenKilled && source.getEntity() instanceof net.minecraft.server.level.ServerPlayer) {
 +            this.explodeCreeper();
 +        }
++        super.dropAllDeathLoot(level, source);
 +    }
 +    // Purpur end - Config to make Creepers explode on death
 +