add step to age questions in sales

app/models/form/sales/questions/age2.rb

@@ -13,6 +13,7 @@ class Form::Sales::Questions::Age2 < ::Form::Question
     @check_answers_card_number = 2
     @max = 110
     @min = 0
+    @step = 1
     @question_number = 28
   end
 end

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

@@ -12,6 +12,7 @@ class Form::Sales::Questions::PersonAge < ::Form::Question
     @check_answers_card_number = person_index
     @min = 0
     @max = 110
+    @step = 1
     @question_number = 29 + (4 * person_index)
   end
 end

spec/models/form/sales/questions/age2_spec.rb

@@ -59,4 +59,8 @@ RSpec.describe Form::Sales::Questions::Age2, type: :model do
   it "has the correct max" do
     expect(question.max).to eq(110)
   end
+
+  it "has the correct step" do
+    expect(question.step).to be 1
+  end
 end

spec/models/form/sales/questions/person_age_spec.rb

@@ -40,6 +40,10 @@ RSpec.describe Form::Sales::Questions::PersonAge, type: :model do
     expect(question.width).to eq(3)
   end
 
+  it "has the correct step" do
+    expect(question.step).to be 1
+  end
+
   context "with person 2" do
     let(:person_index) { 2 }
     let(:question_id) { "age2" }