Cannot use AdjustStrike to add versatile to default Unarmed Attack

[simonward]

This example is (pending) from Amphisbaena Handwraps:

{
	"definition": [
		"item:category:unarmed"
	],
	"key": "AdjustStrike",
	"mode": "add",
	"property": "weapon-traits",
	"value": "versatile-p"
}