Masque: issue with addon loading order and custom skins

!MasqueTest\!MasqueTest.toc

## Interface: 80000
## OptionalDeps: Masque

MasqueTest.lua

!MasqueTest\MasqueTest.lua

local MYSELF, addon = ...

function listKeys(t, prev)
	local key = next(t, prev)
	if key then
		return key, listKeys(t, key)
	end
end

local Masque, Version = LibStub('Masque')
print('Masque version: ', Version)

local button = CreateFrame('CheckButton', MYSELF .. "Button", nil, 'ActionBarButtonTemplate')
button:SetScript('OnEvent', function(_, event, name)

	print(event, name)
	print('- skins:', listKeys(Masque:GetSkins()))

	if name == MYSELF then
		Masque:Register(MYSELF, function(arg, group, skinID, gloss, backdrop, colors, disabled)
			print('Masque callback:', arg, group, skinID, gloss, backdrop, colors, disabled)
			print('- skins:', listKeys(Masque:GetSkins()))
			print('- my skin:', Masque:GetSkin(skinID))
		end)

		local group = Masque:Group(MYSELF)
		group:AddButton(button)
	end
end)
button:RegisterEvent('ADDON_LOADED')