Dispatch inv item packets immediately

src/main/java/net/minecraft/server/PacketPlayOutWindowItems.java

@@ -58,4 +58,10 @@ public class PacketPlayOutWindowItems implements Packet<PacketListenerPlayOut> {
     public void a(PacketListenerPlayOut packetlistenerplayout) {
         packetlistenerplayout.a(this);
     }
+    // Akarin start
+    @Override
+    public boolean canDispatchImmediately() {
+        return true;
+    }
+    // Akarin end
 }