app/components/icon_list_item_component.html.erb
<%= content_tag(:li, **tag_options, class: [*tag_options[:class], 'usa-icon-list__item']) do %>
<%= content_tag(:div, class: icon_css_class) do %>
<%= render IconComponent.new(icon: icon) %>
<% end %>
<div class="usa-icon-list__content"><%= content %></div>
<% end %>