Allow use of report mode non-native wxListCtrl in wxListBook under Mac.
The use of wxListBook in report mode was disabled for wxOSX in r54001 and
r54318 (see #9484) because it created problems with the native wxListCtrl
implementation but the report mode can be used if we're using the generic
wxListCtrl version so do allow to use it if the system option governing the
choice of the version to use is set to "generic".
Of course, the real fix would be to correct the bugs in the native wxListCtrl
version and use report mode always but for now this at least restores correct
behaviour with the generic version.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65559
c3d73ce0-8a6f-49c7-b76d-
6d57e0e08775