[META] WYSIWYG in Experience Builder

Problem/Motivation

📌 [MR Only] provide UI foundation with Drag and Drop + panels Fixed aka https://git.drupalcode.org/project/experience_builder/-/merge_requests/33 added SdcController to provide a skeleton of backend listings. In a retrospective review a few issues were flagged.

Use cases

Functional Requirements

1. Support WYSIWYG (CKEditor 5) text fields as SDC/code component props, with only the ability for the SDC developer to specify “inline” or “block” → , and NO support for matching an “inline HTML” SDC prop against existing text fields.

Non-Functional Requirements or Constraints

1. Must be architected to allow translation support to be added in the future.
2. Must comply with product requirement 14. Configuration management
3. Must be architected to allow in-place editing to be added in the future with low probability of needing breaking changes. (Too complex/big of a feature to guarantee this.)

Proposed resolution

(Numbered lists must happen one after the other, bulleted lists can happen in parallel.)

1. • ✅ Missing shape matching infrastructure + text formats/editors: 📌 `StringSemanticsConstraint::MARKUP`: agree how SDC prop JSON schema can convey it should be markup, and Needs review
   • ✅ Make CKE5 work in content entity form: 📌 CKeditor not loading on formatted text fields in the content entity + component instance forms Active
2. Assigned to: bnjmnm 📌 Support props that can use wysiwyg widgets Active
3. Make the full range of CKEditor 5 functionality work in the content entity form:
   • 📌 Address CKEditor5 "more items" bar contents not being fully visible Postponed
   • 📌 Dialogs opened by CKEditor5 need to be rendered with admin theme Postponed

User interface changes

1. CKEditor 5 works in the component instance form for the 2 restricted text formats
2. CKEditor 5 works completely in the content entity form