SPIGOT-1831: Chicken / sheep not dropping items correctly.

By: md_5 <git@md-5.net>

paper-server/nms-patches/Entity.patch

@@ -364,7 +364,7 @@
      public EntityItem a(ItemStack itemstack, float f) {
          if (itemstack.count != 0 && itemstack.getItem() != null) {
 +            // CraftBukkit start - Capture drops for death event
-+            if (this instanceof EntityLiving) {
++            if (this instanceof EntityLiving && !((EntityLiving) this).forceDrops) {
 +                ((EntityLiving) this).drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asBukkitCopy(itemstack));
 +                return null;
 +            }