Merge branch '388449-be-add-description-for-uploads-in-design-management-rm' into 'master'

Add update_design permission to check user rights to edit description

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/120438



Merged-by: Jan Provaznik <jprovaznik@gitlab.com>
Approved-by: Jan Provaznik <jprovaznik@gitlab.com>
Approved-by: Eugenia Grieff <egrieff@gitlab.com>
Co-authored-by: Rajan Mistry <rmistry@gitlab.com>