Clarify which features are available with self-hosted Duo
What does this MR do and why?
https://docs.gitlab.com/administration/gitlab_duo_self_hosted/ contains nice tables of features that show which features are supported with Duo Self-Hosted. However, this Duo documentation page contains info that would be misleading or confusing since it doesn't make a distinction about whether GitLab or the user team is hosting Duo.
This attempts to clarify which Duo features are available for GitLab Self-Managed customers that also use Duo Self-Hosted.
This change updates documentation for GitLab Duo features in merge requests by adding information about which "Duo Provider" options are supported for each feature. The update clarifies that some features work with both GitLab-hosted and self-hosted AI providers, while others only work with GitLab's hosted AI service. This helps users understand their deployment options when using GitLab's AI-powered code review and assistance tools.
References
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