feat: household situation numbering

app/models/form/sales/questions/buyer1_previous_tenure.rb

@@ -6,6 +6,7 @@ class Form::Sales::Questions::Buyer1PreviousTenure < ::Form::Question
     @header = "What was buyer 1’s previous tenure?"
     @type = "radio"
     @answer_options = answer_options
+    @question_number = 56
   end
 
   def answer_options

app/models/form/sales/questions/buyers_organisations.rb

@@ -7,6 +7,7 @@ class Form::Sales::Questions::BuyersOrganisations < ::Form::Question
     @type = "checkbox"
     @hint_text = "Select all that apply"
     @answer_options = ANSWER_OPTIONS
+    @question_number = 59
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/previous_la_known.rb

@@ -20,6 +20,7 @@ class Form::Sales::Questions::PreviousLaKnown < ::Form::Question
     @conditional_for = {
       "prevloc" => [1],
     }
+    @question_number = 58
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/previous_postcode.rb

@@ -17,5 +17,6 @@ class Form::Sales::Questions::PreviousPostcode < ::Form::Question
         "is_previous_la_inferred" => true,
       },
     }
+    @question_number = 57
   end
 end

app/models/form/sales/questions/previous_postcode_known.rb

@@ -20,6 +20,7 @@ class Form::Sales::Questions::PreviousPostcodeKnown < ::Form::Question
         },
       ],
     }
+    @question_number = 57
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/prevloc.rb

@@ -12,6 +12,7 @@ class Form::Sales::Questions::Prevloc < ::Form::Question
       },
       "value" => "Not known",
     }]
+    @question_number = 58
   end
 
   ANSWER_OPTIONS = {