fix async chunk loading disregardling light data

Spigot-Server-Patches/Asynchronous-chunk-IO-and-loading.patch

@@ -3241,6 +3241,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +                if (ioThrowable != null) {
 +                    com.destroystokyo.paper.util.SneakyThrow.sneaky(ioThrowable);
 +                }
++                chunkHolder.tasks.forEach(Runnable::run);
 +                // Paper end
  
 -                if (nbttagcompound != null) {try (Timing ignored2 = this.world.timings.chunkLoadLevelTimer.startTimingIfSync()) { // Paper start - timings