Merge branch 'id-next-prev-pagination-for-branches' into 'master'

Introduce Prev/Next pagination to branches

See merge request gitlab-org/gitlab!50759

app/views/projects/branches/index.html.haml

@@ -60,6 +60,9 @@
   %ul.content-list.all-branches
     - @branches.each do |branch|
       = render "projects/branches/branch", branch: branch, merged: @merged_branch_names.include?(branch.name), commit_status: @branch_pipeline_statuses[branch.name], show_commit_status: @branch_pipeline_statuses.any?
+  - if Feature.enabled?(:branches_pagination_without_count, @project, default_enabled: true)
+    = paginate_without_count @branches
+  - else
     = paginate @branches, theme: 'gitlab'
 - else
   .nothing-here-block

config/feature_flags/development/branches_pagination_without_count.yml

+---
+name: branches_pagination_without_count
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/50759
+rollout_issue_url:
+milestone: '13.9'
+type: development
+group: group::source code
+default_enabled: true