Update Palworld to include a multi-threading suggestion for 1.0

[klopsknoedel]

This adds a hint to the multi-threading settings to warn about potential performance degradation with Palworld 1.0+
I've tested this myself and enabling multi-threading in v1. For example base/camp-inventories can get out of sync. If you use some materials at a workbench, the consumption may not be reflected to the client where you "have" the exact amount of materials but are lot allowed to start the production again.

So, at least, users should be warned about turning this setting on for Palworld 1.0

This also reflects the official server arguments description: https://docs.palworldgame.com/settings-and-operation/arguments/#regarding-performances

[klopsknoedel]

closed as code-changes got published with the wrong user. I'll create a new one.

P.S. here is the new PR #1945