main.DomEvents: getEventData() => include aria attributes

while there is sadly no ariaSet equivalent to the dataSet, it can be useful to include these attributes to check for e.g. aria-rowindex inside a buffered grid click event.

We would need something like:

function getAllAriaAttributes(node) {
  const ariaAttributes = {};
  const attributes = node.attributes;

  for (let i = 0; i < attributes.length; i++) {
    const attribute = attributes[i];
    if (attribute.name.startsWith('aria-')) {
      ariaAttributes[attribute.name] = attribute.value;
    }
  }

  return ariaAttributes;
}