Merge branch 'g.hickman-clarify-srp-limit' into 'master'

Clarify limits to creating multiple security policies

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/140481



Merged-by: Russell Dickenson <rdickenson@gitlab.com>
Approved-by: Alan (Maciej) Paruszewski <mparuszewski@gitlab.com>
Approved-by: Sam White <swhite@gitlab.com>
Co-authored-by: Grant Hickman <ghickman@gitlab.com>