fixup! CLDC-4365: Use a ternary class for two thirds conditional

app/controllers/form_controller.rb

@@ -25,6 +25,7 @@ class FormController < ApplicationController
           updated_question = @page.questions.reject { |question| question.check_answer_label.blank? }.first
           updated_question_string = [updated_question&.question_number_string, updated_question&.check_answer_label.to_s.downcase].compact.join(": ")
           flash[:notice] = "You have successfully updated #{updated_question_string}"
+          flash[:notification_banner_two_thirds] = true
         end
 
         update_duplication_tracking

app/helpers/application_helper.rb

@@ -32,6 +32,21 @@ module ApplicationHelper
     !request.path.match?(/\/notifications\/\d+$/) && (authenticated_user_has_notifications? || unauthenticated_user_has_notifications?)
   end
 
+  def notification_banner
+    govuk_notification_banner(
+      title_text: "Success",
+      success: true,
+      title_heading_level: 3,
+      title_id: "flash-notice",
+      role: "alert",
+    ) do |notification_banner|
+      notification_banner.with_heading(text: flash.notice.html_safe)
+      if flash[:notification_banner_body]
+        tag.p flash[:notification_banner_body]&.html_safe
+      end
+    end
+  end
+
 private
 
   def paginated_title(title, pagy)

app/views/layouts/application.html.erb

@@ -120,17 +120,11 @@
 
       <main class="govuk-main-wrapper govuk-main-wrapper--auto-spacing" id="main-content" role="main">
         <% if flash.notice && !flash.notice.include?("translation missing") %>
-          <%= govuk_notification_banner(
-            title_text: "Success",
-            success: true, title_heading_level: 3,
-            title_id: "flash-notice",
-            role: "alert"
-          ) do |notification_banner|
-            notification_banner.with_heading(text: flash.notice.html_safe)
-            if flash[:notification_banner_body]
-              tag.p flash[:notification_banner_body]&.html_safe
-            end
-          end %>
+          <div class="govuk-grid-row">
+            <div class="<%= flash[:notification_banner_two_thirds] ? "govuk-grid-column-two-thirds-from-desktop" : "govuk-grid-column-full" %>">
+              <%= notification_banner %>
+            </div>
+          </div>
         <% end %>
         <%= content_for?(:content) ? yield(:content) : yield %>
       </main>