feat: put la in nil card with rest of uprn/address qs

app/models/form/lettings/questions/la.rb

@@ -5,7 +5,7 @@ class Form::Lettings::Questions::La < ::Form::Question
     @check_answer_label = "Local Authority"
     @header = "What is the property’s local authority?"
     @type = "select"
-    @check_answers_card_number = 0
+    @check_answers_card_number = nil
     @hint_text = ""
     @question_number = 13
   end

app/models/form/lettings/subsections/property_information.rb

@@ -10,8 +10,8 @@ class Form::Lettings::Subsections::PropertyInformation < ::Form::Subsection
     @pages ||= [
       uprn_questions,
       Form::Lettings::Pages::PropertyLocalAuthority.new(nil, nil, self),
-      Form::Lettings::Pages::MinRentValueCheck.new("local_authority_min_rent_value_check", nil, self, check_answers_card_number: 0),
-      Form::Lettings::Pages::MaxRentValueCheck.new("local_authority_max_rent_value_check", nil, self, check_answers_card_number: 0),
+      Form::Lettings::Pages::MinRentValueCheck.new("local_authority_min_rent_value_check", nil, self, check_answers_card_number: nil),
+      Form::Lettings::Pages::MaxRentValueCheck.new("local_authority_max_rent_value_check", nil, self, check_answers_card_number: nil),
       Form::Lettings::Pages::FirstTimePropertyLetAsSocialHousing.new(nil, nil, self),
       Form::Lettings::Pages::PropertyLetType.new(nil, nil, self),
       Form::Lettings::Pages::PropertyVacancyReasonNotFirstLet.new(nil, nil, self),