Make ckeditor_indentblock compatible with Drupal 10 and CKEditor 5
requested to merge issue/ckeditor_indentblock-3338085:3338085-make-ckeditorindentblock-compatible into 8.x-1.x
Enable the IndentBlock functionality included with CKEditor 5 core.
@todo: Implement per-format config to disable IndentBlock.
Closes #3338085