AGW on Phoenix: restore support for `HTMLListBox` and `SimpleHTMLListBox` in `persist_handlers.py`.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@73727 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Avoid Sphinx warning for HTMLHelpDialog/Frame/Window while building the Phoenix documentation.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@73728 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775