*fixed regression where cnv objects captured runtime clicks due to pd-l2ork's...

*fixed regression where cnv objects captured runtime clicks due to pd-l2ork's passing of the click to the topmost visible object, rather than the first clickable object in the stack. This also fixes problems with legacy patches that rely vanilla/extended's assignment of click to the lowest, and as is the case with s-env-help.pd in s-abstractions, invisible object, rather than the one apparent to the user.