avoiding focus lost events when a different subview gets focused, see #14042

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74100 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
avoiding reentrancy problems and congestion

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74101 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775