Merge branch '439543-remove-mr-vulnerability-feedback-path' into 'master'

Remove MRWidgetEntity#vulnerability_feedback_path

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143013



Merged-by: Bala Kumar <sbalakumar@gitlab.com>
Approved-by: Lorenz van Herwaarden <lvanherwaarden@gitlab.com>
Approved-by: Zamir Martins <zfilho@gitlab.com>
Approved-by: Bala Kumar <sbalakumar@gitlab.com>
Co-authored-by: Malcolm Locke <mlocke@gitlab.com>