[Feature Request] Arabic culture is not supported - CultureInfo("ar")

[MajdAlbaho]

When binding the culture of calendar to Ar culture, no UI appears

I tried Fr, En and other cultures, and it all works, but may we can add Arabic names of months and days :)

[MajdAlbaho]

When debugging, it throws this error "Index and length must refer to a location within the string. Parameter name: length"

I set it in code behind instead of Binding from UI to catch the error,

try { CalendarControl.Culture = new CultureInfo("ar"); } catch (Exception e) { Console.WriteLine(e); }

[MajdAlbaho]

It should be ar-SY to avoid throw the error