Merge branch '377673-improve-dropdown-keyboard-nav-scrolling' into 'master'

Add auto-scrolling to dropdown vue component during keyboard navigation

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/101578



Merged-by: Enrique Alcántara <ealcantara@gitlab.com>
Approved-by: Himanshu Kapoor <info@fleon.org>
Approved-by: Enrique Alcántara <ealcantara@gitlab.com>
Co-authored-by: Mona Lisa <kmball11@gmail.com>