Default enable widget GraphQL flag

https://gitlab.com/gitlab-org/gitlab/-/issues/267560

app/controllers/projects/merge_requests_controller.rb

@@ -32,7 +32,7 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo
     push_frontend_feature_flag(:file_identifier_hash)
     push_frontend_feature_flag(:batch_suggestions, @project, default_enabled: true)
     push_frontend_feature_flag(:approvals_commented_by, @project, default_enabled: true)
-    push_frontend_feature_flag(:merge_request_widget_graphql, @project)
+    push_frontend_feature_flag(:merge_request_widget_graphql, @project, default_enabled: :yaml)
     push_frontend_feature_flag(:drag_comment_selection, @project, default_enabled: true)
     push_frontend_feature_flag(:unified_diff_components, @project, default_enabled: true)
     push_frontend_feature_flag(:default_merge_ref_for_diffs, @project, default_enabled: :yaml)

changelogs/unreleased/ph-defaultEnableWidgetGraphqlFlag.yml

+---
+title: Convert merge request widget state to use GraphQL
+merge_request: 53846
+author:
+type: changed

config/feature_flags/development/merge_request_widget_graphql.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/267560
 milestone: '13.3'
 type: development
 group: group::code review
-default_enabled: false
+default_enabled: true