Don't take focus into account when setting selected state for cell text

The selected state is always set for the background of a selected cell,
so it should also be set for the text/foreground. Fixes text color for
unfocused selected cells with Windows high-contrast themes.

src/generic/datavgen.cpp

@@ -2832,7 +2832,7 @@ void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
             bool selected = m_selection.IsSelected(item);
 
             int state = 0;
-            if (m_hasFocus && selected)
+            if (selected)
                 state |= wxDATAVIEW_CELL_SELECTED;
 
             cell->SetState(state);