Merge branch '420167-fix-group-hooks' into 'master'

Fix creating work item at group level with group_webhooks

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/128031



Merged-by: charlie ablett <cablett@gitlab.com>
Approved-by: charlie ablett <cablett@gitlab.com>
Approved-by: Bojan Marjanovic <bmarjanovic@gitlab.com>
Approved-by: Dzmitry Meshcharakou <12459192-dmeshcharakou@users.noreply.gitlab.com>
Reviewed-by: Dzmitry Meshcharakou <12459192-dmeshcharakou@users.noreply.gitlab.com>
Co-authored-by: Mario Celi <mcelicalderon@gitlab.com>