[5.0.0-alpha6] Replace loop by printing slot in table component

Problem/Motivation

We shouldn't loop on table rows

{% if body %}
  <tbody>
  {% for row in body %}
    {{ row }}
  {% endfor %}
  </tbody>
{% endif %}

Proposed resolution

Instead we should print directly the slot

{% if body %}
  <tbody>
    {{ body }}
  </tbody>
{% endif %}