GPP

Bugfixes

• Target marker was passed on to the children of slimes and magma cubes, causing the device not to select them as targets.

Known bugs:

• Piglins repeatedly become invalid targets for the GPP because they lose aggro on the player to check if the player is still a valid aggro target.
• Turning off the GPP as its target is dying can cause it to continue losing durability.

Additional refactoring.