Use project helper instead of helper patch

app/helpers/messenger_projects_helper.rb

@@ -0,0 +1,14 @@
+module MessengerProjectsHelper
+  def project_settings_tabs
+    tabs = super
+
+    if User.current.allowed_to?(:manage_messenger, @project)
+      tabs << { name: 'messenger',
+                action: :show,
+                partial: 'messenger_settings/show',
+                label: :label_messenger }
+    end
+
+    tabs
+  end
+end