ISTWCMS-5686 Set default group due to the new feature from 8.x-1.0-beta5
requested to merge feature/ISTWCMS-5686-l26yan-Update-to-layout_builder_styles-8.x-1.0-beta5 into 1.0.x
ISTWCMS-5686 Set default group due to the new feature from 8.x-1.0-beta5