Merge branch 'djb-master-patch-45736' into 'master'

Clarify requirements for unused default storage config

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/183617



Merged-by: Evan Read <eread@gitlab.com>
Approved-by: Evan Read <eread@gitlab.com>
Reviewed-by: Evan Read <eread@gitlab.com>
Co-authored-by: Danny Bailey <dbailey@gitlab.com>