Check that files returned from wxDir::FindXXX() match the filter.

Native Windows functions used by wxDir check the filter against both the short
and the long name resulting in unexpected results, e.g. searching for
"foo.baz" would find "foo.bazaar".

Fix this by explicitly rechecking that we have a valid match ourselves.

Closes #3432.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73790 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Remove rightarr.cur which doesn't exist any more from files list.

This should have been part of r73491, see #14991.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73791 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775