Fix keyboard navigation in wx{List,Choice,Tree,Tool}book controls.

Inherit from wxNavigationEnabled<wxBookCtrlBase> instead of just
wxBookCtrlBase to ensure that the keyboard navigation works correctly for
these controls.

The toolbar in wxToolbook still doesn't accept focus from keyboard but at
least the pages can be TAB-bed too and from. And the rest of the controls
are now fully accessible using only the keyboard.

Closes #14303.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71435 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/treebook.h

@@ -17,6 +17,7 @@
 #if wxUSE_TREEBOOK
 
 #include "wx/bookctrl.h"
+#include "wx/containr.h"
 #include "wx/treectrl.h"        // for wxArrayTreeItemIds
 
 typedef wxWindow wxTreebookPage;
@@ -27,7 +28,7 @@ class WXDLLIMPEXP_FWD_CORE wxTreeEvent;
 // wxTreebook
 // ----------------------------------------------------------------------------
 
-class WXDLLIMPEXP_CORE wxTreebook : public wxBookCtrlBase
+class WXDLLIMPEXP_CORE wxTreebook : public wxNavigationEnabled<wxBookCtrlBase>
 {
 public:
     // Constructors and such