Comparing paths using wxString is a bad idea as identical paths can be seen as
mismatching because of case-only differences.
Also, don't reset wxRadioBox selection from its selection handler, this
doesn't work under e.g. wxGTK and is a bad example.
Closes#14791.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72820 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775