Add detection for placeholder players

[lemeow125]

Is there an existing feature request for this?

• [X] I have searched the existing issues before opening this feature request.

Describe the feature you would like to see.

On version 1.20.2 with PaperMC build #217, placeholder players such as the Dispenser-Block from MoDispenserMechanics can prevent server hibernation. Please add detection for non-existent players using player.hasMetadata("NPC") and exempt them from player counting.

Describe the solution you'd like.

A possible solution has been outlined here

Additional context to this request.

No response