URI returns wrong absolute path on OSX when File name is UTF-8

To Repro, download the attached Visual Studio for mac project
The English File's excURL will be correct
"file:///Users/Text.txt"
The Others Will repeat the path once after returning it
"file:///Users/%D0%A2%D0%B5%D0%BA%D1%81%D1%82.txt/Users/%D0%A2%D0%B5%D0%BA%D1%81%D1%82.txt"


Reference: https://bugzilla.xamarin.com/show_bug.cgi?id=56003