Enable batch_suggestions FF by default

app/controllers/projects/merge_requests_controller.rb

@@ -35,7 +35,7 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo
     push_frontend_feature_flag(:mr_commit_neighbor_nav, @project, default_enabled: true)
     push_frontend_feature_flag(:multiline_comments, @project)
     push_frontend_feature_flag(:file_identifier_hash)
-    push_frontend_feature_flag(:batch_suggestions, @project)
+    push_frontend_feature_flag(:batch_suggestions, @project, default_enabled: true)
   end
 
   before_action do

changelogs/unreleased/227799-enable-batch-suggestions-by-default.yml

+---
+title: Enable Batch Suggestins feature flag by default
+merge_request: 36561
+author:
+type: added

doc/user/discussions/index.md

@@ -492,9 +492,10 @@ introduced by [#25381](https://gitlab.com/gitlab-org/gitlab/-/issues/25381).
 ### Batch Suggestions
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/25486) in GitLab 13.1 as an [alpha feature](https://about.gitlab.com/handbook/product/#alpha).
-> - It's deployed behind a feature flag, disabled by default.
-> - It's disabled on GitLab.com.
-> - To use it in GitLab self-managed instances, ask a GitLab administrator to [enable it](#enable-or-disable-batch-suggestions).
+> - It was deployed behind a feature flag, disabled by default.
+> - [Became enabled by default](https://gitlab.com/gitlab-org/gitlab/-/issues/227799) on GitLab 13.2.
+> - It's enabled on GitLab.com.
+> - For GitLab self-managed instances, GitLab administrators can opt to [disable it](#enable-or-disable-batch-suggestions-core-only).
 
 You can apply multiple suggestions at once to reduce the number of commits added
 to your branch to address your reviewers' requests.
@@ -515,12 +516,12 @@ to your branch to address your reviewers' requests.
 
    ![A code change suggestion displayed, with the button to apply the batch of suggestions highlighted.](img/apply_batch_of_suggestions_v13_1.jpg "Apply a batch of suggestions")
 
-#### Enable or disable Batch Suggestions
+#### Enable or disable Batch Suggestions **(CORE ONLY)**
 
 Batch Suggestions is
-deployed behind a feature flag that is **disabled by default**.
+deployed behind a feature flag that is **enabled by default**.
 [GitLab administrators with access to the GitLab Rails console](../../administration/feature_flags.md)
-can enable it for your instance.
+can opt to disable it for your instance.
 
 To enable it: