[BUG] Icon for theme "Auto" selection not showing up

[jcarvalhonc]

In the menu for choose the color scheme, the icon for auto should be

<i class="bi bi-circle-half me-2"></i>
<ul class="dropdown-menu dropdown-menu-end" aria-labelledby="bd-theme-text"  style="--bs-dropdown-min-width: 8rem;">
            <li>
                <button
                    type="button"
                    class="dropdown-item d-flex align-items-center active"
                    data-bs-theme-value="light"
                    aria-pressed="false">
                    <i class="bi bi-sun-fill me-2"></i>
                    Claro
                    <i class="bi bi-check-lg ms-auto d-none"></i>
                </button>
            </li>
            <li>
                <button
                    type="button"
                    class="dropdown-item d-flex align-items-center"
                    data-bs-theme-value="dark"
                    aria-pressed="false">
                    <i class="bi bi-moon-fill me-2"></i>
                    Noite
                    <i class="bi bi-check-lg ms-auto d-none"></i>
                </button>
            </li>
            <li>
                <button
                    type="button"
                    class="dropdown-item d-flex align-items-center"
                    data-bs-theme-value="auto"
                    aria-pressed="true">
                    <i class="bi bi-circle-half me-2"></i>
                    Auto
                    <i class="bi bi-check-lg ms-auto d-none"></i>
                </button>
            </li>
        </ul>