Common use cases are groups of buttons, groups of tags, or similar items.
The grouping is visual, so no role is set. If the children form a set that
should also be grouped for assistive technology, pass role="group" and a
label.
Usage
<.cluster>
<div>some item</div>
<div>some other item</div>
</.cluster>
With a role and a label:
<.cluster role="group" aria-label="Actions">
<.button>Edit</.button>
<.button>Delete</.button>
</.cluster>