SMS inline schema config not defined for ckeditor5

Problem/Motivation

When allowing inline sms in full_html for ckeditor5:

admin/config/content/formats/manage/full_html
Error message
'display' is not a supported key.
'display_text' is not a supported key.
'default_icon' is not a supported key.
'custom_icon_path' is not a supported key.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes