Merge branch '364497-enable-paginated-mr-discussions-default' into 'master'

Enable paginated_mr_discussions feature by default

See merge request gitlab-org/gitlab!93640

config/feature_flags/development/paginated_mr_discussions.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/364497
 milestone: '15.1'
 type: development
 group: group::code review
-default_enabled: false
+default_enabled: true