Merge branch 'nd/optimize-validation-event-triggering' into 'master'

Run validation only for synced work items

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/145686



Merged-by: Prabakaran Murugesan <pmurugesan@gitlab.com>
Approved-by: Kassio Borges <kborges@gitlab.com>
Approved-by: Dzmitry Meshcharakou <12459192-dmeshcharakou@users.noreply.gitlab.com>
Approved-by: Dmitry Gruzd <dgruzd@gitlab.com>
Approved-by: Prabakaran Murugesan <pmurugesan@gitlab.com>
Reviewed-by: Kassio Borges <kborges@gitlab.com>
Reviewed-by: Nicolas Dular <ndular@gitlab.com>
Reviewed-by: Dzmitry Meshcharakou <12459192-dmeshcharakou@users.noreply.gitlab.com>
Co-authored-by: Nicolas Dular <ndular@gitlab.com>