Modify the status bar sample to use two fields of just the right size for
their contents to confirm that this doesn't work correctly under at least MSW
currently (see #10696).
Notice that we need two fields because the behaviour/problem is different for
the last field and all the other ones.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61991 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775