Conditional radios have aria-controls even without conditional content

[tim-s-ccs]

The file for the conditional question has templates/gds/layout/conditional_question.html has the following block of code that always runs even when the radio has no conditional content:

{% block additional_input_attributes %}
  aria-controls="conditional_{{ field.html_name }}_{{ position }}"
{% endblock %}

This could be updated to make it conditional like the block below:

{% block additional_input_attributes %}
  {% if conditional_content %}
    aria-controls="conditional_{{ field.html_name }}_{{ position }}"
  {% endif %}
{% endblock %}