when the listctrl is clicked on. It has to do with a dependency on
the order of focus events so on wxMac we'll just explicitly dismiss
the edit control if it's active when the listctrl is clicked on.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@36720 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775