Add compatibility for HuskSync.

[killertuling]

In reality, the plugin can work with HuskSync.
However, I encountered a situation where when a player switched servers, HuskSync had not fully synchronized the inventory yet, and AxInventoryRestore saved the inventory.
This led to confusion when querying the player's inventory about the saved data. It was only after coordinating with records like COI that I found out it was caused by AxInventoryRestore saving "too early."
This is a low-probability event, but it did happen.
Could you please add extra compatibility for synchronization plugins like HuskSync, to make it wait a bit for HuskSync when switching servers?