Merge branch 'ph/514923/mrApproversFilterHiddenUsersDefaultEnabled' into 'master'

Enable `mr_approvers_filter_hidden_users` by default

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/180592



Merged-by: Joe Woodward <jwoodward@gitlab.com>
Approved-by: Amy Qualls <aqualls@gitlab.com>
Approved-by: Joe Woodward <jwoodward@gitlab.com>
Co-authored-by: Amy Qualls <aqualls@gitlab.com>
Co-authored-by: Phil Hughes <me@iamphill.com>

doc/user/project/merge_requests/approvals/_index.md

@@ -71,6 +71,8 @@ Use cases include:
 
 ## View approval status
 
+> - More granular approver display [introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/178005) in GitLab 17.9 [with a flag](../../../../administration/feature_flags.md) named `mr_approvers_filter_hidden_users`. Enabled by default.
+
 You can see the approval status of a merge request in two places. On the [merge request itself](#for-a-single-merge-request)
 and in the [list of merge requests](#in-the-list-of-merge-requests) for your project or group.
 
@@ -95,6 +97,14 @@ The widget displays one of these statuses:
 
 To check if your approval satisfies Code Owner requirements, select **Expand eligible approvers** (**{chevron-lg-down}**).
 
+If you have enabled the `mr_approvers_filter_hidden_users` feature flag, introduced in GitLab 17.9,
+approver visibility depends on your project membership, and group privacy:
+
+- Project members see all approvers.
+- Project non-members see:
+  - All approvers, if the approvers are all from public groups.
+  - No information about approvers, if any of the approvers are from private groups.
+
 ### In the list of merge requests
 
 The list of merge requests for [your project or group](../_index.md#view-merge-requests)

ee/config/feature_flags/beta/mr_approvers_filter_hidden_users.yml

@@ -6,4 +6,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/514923
 milestone: '17.9'
 group: group::code review
 type: beta
-default_enabled: false
+default_enabled: true