govukDateInput not allowing "attribute" property to change for fieldset option

[andrew-mcgregor]

Hi,
I've been working using the govukDateInput component and was looking to disable the input boxes; I am using the <fieldset> variant. When passing in the property "attribute", I found that it was being ignored. e.g.

  {{ govukDateInput({
    value: 'the value',
    fieldset: {
      attributes: { 
        disabled: true 
      },
      legend: {
        text: t('common:dob'),
        isPageHeading: false,
        classes: 'govuk-fieldset__legend--s'
      }
    },
    hint: {
      text: t('common:dobHint')
    },
  })}}

I've looked at your codeset and the issue is with the attributes value you've had to add. This causes any attribute property passed in to be ignored:

  {% call govukFieldset({
    describedBy: describedBy,
    classes: params.fieldset.classes,
    attributes: {
      role: "group"
    },
    legend: params.fieldset.legend
  }) %}
  {{ innerHtml | trim | safe }}
  {% endcall %}

I think the solution is quite simple and should have no impact. A very rough example solution could be:

  {% call govukFieldset({
    describedBy: describedBy,
    classes: params.fieldset.classes,
    attributes: { ...params.fieldset.attributes, role: 'group' },
    legend: params.fieldset.legend
  }) %}
  {{ innerHtml | trim | safe }}
  {% endcall %}

I've decided against disabling these now, but this still seems worth fixing.
Thanks