Add page header to monthly rent only for the version with two questions on the page

app/models/form/sales/pages/monthly_rent_staircasing_owned.rb

@@ -3,6 +3,7 @@ class Form::Sales::Pages::MonthlyRentStaircasingOwned < ::Form::Page
     super
     @id = "monthly_rent_staircasing_owned"
     @copy_key = "sales.sale_information.mrent_staircasing"
+    @header = ""
     @depends_on = [{
       "stairowned_100?" => true,
     }]

config/locales/forms/2025/sales/sale_information.en.yml

@@ -194,6 +194,7 @@ en:
             question_text: "What is the basic monthly rent?"
 
           mrent_staircasing:
+            page_header: "Monthly rent"
             prestaircasing:
               check_answer_label: "Monthly rent prior to staircasing"
               hint_text: "Amount paid before any charges"