Switch the node body field back to a text_with_summary field, and hide the summary everywhere it appears

Drupal 11.1.0-rc1 is next week and I think the core patch could still theoretically land, although it's not looking as likely as it did a week ago. I don't know how this works with Drupal CMS timings and whether this could be reverted in a week if it needs to go in this week etc.

Happy to do this for now, if the issue lands we can re-adjust. Will be good to have one less patch.

A simpler (except for annoying nightwatch test coverage) attempt to prevent this being necessary happening on 📌 Remove node_add_body_field from NodeTypeForm Active

Yeah - the idea is to merge this now as an incremental improvement, then rely on the change being made in that issue once it lands in a tagged release of core. 👍

Alright - merged into 0.x. Let's get this improved in core!