Add validation to dependent ccharge field (#979)

Although both fields are on the same page, we need to add a validation here so that we can clear both values on import.

app/models/validations/financial_validations.rb

@@ -110,6 +110,7 @@ module Validations::FinancialValidations
     if record.is_carehome?
       period = record.form.get_question("period", record).label_from_value(record.period).downcase
       if record.chcharge.blank?
+        record.errors.add :is_carehome, I18n.t("validations.financial.carehome.not_provided", period:)
         record.errors.add :chcharge, I18n.t("validations.financial.carehome.not_provided", period:)
       elsif !weekly_value_in_range(record, "chcharge", 10, 1000)
         max_chcharge = record.weekly_to_value_per_period(1000)

spec/models/validations/financial_validations_spec.rb

@@ -1010,6 +1010,8 @@ RSpec.describe Validations::FinancialValidations do
           financial_validator.validate_care_home_charges(record)
           expect(record.errors["chcharge"])
             .to include(match I18n.t("validations.financial.carehome.not_provided", period: "every 4 weeks"))
+          expect(record.errors["is_carehome"])
+            .to include(match I18n.t("validations.financial.carehome.not_provided", period: "every 4 weeks"))
         end
       end