Merge branch '377822-drop-defaults-self-managed' into 'master'

Remove default partition value from CI tables

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/126726



Merged-by: Matt Kasa <mkasa@gitlab.com>
Approved-by: Tianwen Chen <tchen@gitlab.com>
Approved-by: Matt Kasa <mkasa@gitlab.com>
Reviewed-by: Tianwen Chen <tchen@gitlab.com>
Co-authored-by: Marius Bobin <mbobin@gitlab.com>