Fix missing/wrong age mappings

app/models/form/sales/questions/age1.rb

@@ -4,6 +4,7 @@ class Form::Sales::Questions::Age1 < ::Form::Question
     @id = "age1"
     @type = "numeric"
     @width = 2
+    @copy_key = "sales.household_characteristics.age1.age1"
     @inferred_check_answers_value = [
       {
         "condition" => { "age1_known" => 1 },

app/models/form/sales/questions/buyer1_age_known.rb

@@ -3,6 +3,7 @@ class Form::Sales::Questions::Buyer1AgeKnown < ::Form::Question
     super
     @id = "age1_known"
     @type = "radio"
+    @copy_key = "sales.household_characteristics.age1.age1_known"
     @answer_options = ANSWER_OPTIONS
     @conditional_for = {
       "age1" => [0],

config/locales/forms/2024/sales/household_characteristics.en.yml

@@ -106,7 +106,7 @@ en:
                 check_answer_label: "Person 2’s age known?"
                 hint_text: ""
                 question_text: "Do you know person 2’s age?"
-              age:
+              age2:
                 check_answer_label: "Person 2’s age"
                 hint_text: ""
                 question_text: "Age"