Merge branch 'work-item-design-management-alignment-fix' into 'master'

Work items design management: Fix alignment of placeholder

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/179245



Merged-by: Andrei Zubov <azubov@gitlab.com>
Approved-by: Annabel Dunstone Gray <annabel.dunstone@gmail.com>
Approved-by: Andrei Zubov <azubov@gitlab.com>
Co-authored-by: Sascha Eggenberger <seggenberger@gitlab.com>