createDefaultObject copy array & object as reference

[icebob]

{
	type: "checklist",
	model: "font.style",
	multiple: true,
	default: [],
	values: [
		{ id: "bold", name: msg(7218) },
		{ id: "italic", name: msg(7219) },
	]
}

vfg must clone the default value if it is an Object and not null