Partial revert of 6a2e3eba.

Having no space is fine in Drupal, but leaves no space between the tag
name and the first attribute in Patternlab.

This reverts commit c26f1ac5.

Having no space is fine in Drupal, but leaves no space between the tag
name and the first attribute in Patternlab.

Fixes issue introduced in 5f333f93.

Original issue prevented duplicate class attributes by combining all the
classes. But the extra class attributes had been ignored by browsers.
This returns it to just the classes present previously.

Fixes issue introduced in e06027a6.

Original issue prevented duplicate class attributes by combining all the
classes. But the extra class attributes had been ignored by browsers.
This returns it to just the classes present previously.

Fixes issue introduced in 9d492474 and updated in 83b82bef.

Fixes issue introduced in 727fe5a8.

Fixes problem introduced in 00734e73.

ISTWCMS-4210 Add js code which is from https://www.drupal.org/project/layout_builder_modal/issues/3063834#comment-13842736 to source/_patterns/07-ckeditor/js/ckeditor.js