Description

In branch develop-4 using render_model template tag (docs) throws 'PageAdmin' object has no attribute 'title_frontend_editable_fields'

Error is in file pageadmin.py

It seems that in v4 BasePageAdmin class was removed, which used to have title_frontend_editable_fields = ['title', 'menu_title', 'page_title']

I'm not sure where this should go in v4.

Steps to reproduce

1. Template code

        {% render_model request.current_page "page_title" as page_title %}

2. Login to admin and click on edit page
3. Double click the title
4. Get pop-up with 500 error

Expected behaviour

Admin modal edit for page_title field.

Actual behaviour

500 error in modal window.

Screenshots