Not setting macro causes an exception #1996
Description
This is from Eternia:
window "main"
elem "main"
type = MAIN
pos = 281,0
size = 1487x714
anchor1 = -1,-1
anchor2 = -1,-1
is-default = true
saved-params = "pos;size"
on-size = "WindowResize"
statusbar = false
icon = 'icons\\interface\\titlescreen\\images\\meranthe_logo.png'
macro defaulting to an empty string causes a KeyNotFound exception in ControlWindow.cs: public InterfaceMacroSet Macro => _interfaceManager.MacroSets[WindowDescriptor.Macro.AsRaw()];
According to the ref, it seems this field is optional so we just need to support it being null or empty.