Merge branch 'pipeline-minigraph-dropdown-migration-pt2' into 'master'

Pipeline MiniGraph: Migrate dropdown to GlDisclosureDropdown (Pt. 2)

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144606



Merged-by: Payton Burdette <pburdette@gitlab.com>
Approved-by: Julia Miocene <jmiocene@gitlab.com>
Approved-by: Stan Hu <stanhu@gmail.com>
Approved-by: Payton Burdette <pburdette@gitlab.com>
Reviewed-by: Sascha Eggenberger <seggenberger@gitlab.com>
Co-authored-by: Sascha Eggenberger <seggenberger@gitlab.com>
Co-authored-by: Phil Hughes <me@iamphill.com>