Merge branch '424830-set-vuln-to-detected' into 'master'

Set MR finding vulnerability state to `detected`

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/131732



Merged-by: Mehmet Emin INAC <minac@gitlab.com>
Approved-by: Mehmet Emin INAC <minac@gitlab.com>
Approved-by: Michał Zając <mzajac@gitlab.com>
Co-authored-by: Malcolm Locke <mlocke@gitlab.com>