The function component documentation mentions that it can use the new syntax:
<.error :for={msg <- @errors} message={msg}/>
The LiveComponent documentation uses the legacy syntax:
<%= for card <- @cards do %>
<.live_component module={CardComponent} card={card} id={card.id} board_id={@id} />
<% end %>
Is this a case of documentation needing to be updated or is do LiveComponents just not support the new syntax?