Fix wxSetCursorEvent handling
For compatibility with wxMSW, send event up the parent chain.
Properly handle setting the cursor for a wxSetCursorEvent, and don't overwrite the window cursor.
see #15801

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75821 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
patched for ICC

Signed-off-by: Marian 'VooDooMan' Meravy <vdm113@gmail.com>