Fix unsubscribe template rendering issue for campaign messages on /hub/automated_messages/ page (#6160)

Co-authored-by: Tahsina Islam <[email protected]>

Author: embarnard

app/controllers/concerns/campaign_email_subscription_updater_concern.rb

@@ -16,7 +16,7 @@ def update_campaign_contact_email_opt_in(opt_in:)
 
       if contact.nil?
         flash[:alert] = I18n.t("notifications_settings.no_record")
-        return render :campaign_email_preferences
+        return render :unsubscribe_from_campaign_emails
       end
 
       contact.update!(email_notification_opt_in: opt_in)