Async Locator Lootr Compat

This mod is fork from Async Locator.

When Lootr is installed, during the generation of loot chests that contain treasure maps, the original mod causes an issue because Lootr does not actually generate the loot directly—instead, it creates a loot instance.

This results in asynchronously generated treasure maps failing to be written back to the corresponding container.

This fork fixes that problem and also ensures that such abnormal write‑back threads are properly released.