Fix #6117 clear contact types in update

Author: thejonroberts

app/controllers/case_contacts/form_controller.rb

@@ -24,15 +24,15 @@ def update
     respond_to do |format|
       format.html do
         params[:case_contact][:status] = CaseContact.statuses[step] if !@case_contact.active?
-        if @case_contact.update(case_contact_params)
+        if @case_contact.update_cleaning_contact_types(case_contact_params)
           finish_editing
         else
           prepare_form
           render step
         end
       end
       format.json do
-        if @case_contact.update(case_contact_params)
+        if @case_contact.update_cleaning_contact_types(case_contact_params)
           render json: @case_contact, status: :ok
         else
           render json: @case_contact.errors.full_messages, status: :unprocessable_entity