Apps can see through the file redirection fixup with GetFinalPathNameByHandleW

[sylveon]

When apps call GetFinalPathNameByHandleW, it will return the redirected path, not the original path, which can then cause issues if the app uses the result as a relative path to find files. This is most obvious when using something like Python's os.path.realpath, which calls GetFinalPathNameByHandleW.