Remove `:prevent_closing_blocked_issues` feature flag

app/views/projects/issues/_discussion.html.haml

@@ -7,7 +7,7 @@
 
 %section.issuable-discussion.js-vue-notes-event
   #js-vue-notes{ data: { notes_data: notes_data(@issue).to_json,
-    noteable_data: serialize_issuable(@issue, with_blocking_issues: Feature.enabled?(:prevent_closing_blocked_issues, @issue.project)),
+    noteable_data: serialize_issuable(@issue, with_blocking_issues: true),
     noteable_type: 'Issue',
     target_type: 'issue',
     current_user_data: UserSerializer.new.represent(current_user, {only_path: true}, CurrentUserEntity).to_json } }

changelogs/unreleased/fix_blocked_issue_warning.yml

+---
+title: Remove `:prevent_closing_blocked_issues` feature flag
+merge_request: 32630
+author: Lee Tickett
+type: fixed

ee/spec/requests/projects/issues_controller_spec.rb

@@ -21,8 +21,6 @@ RSpec.describe Projects::IssuesController do
 
     context 'with blocking issues' do
       before do
-        stub_feature_flags(prevent_closing_blocked_issues: true)
-
         get_show # Warm the cache
       end