message: fix(theme): fix DropdownLink
diff: @focusout="
  isLastItemOfArray(child, item.children) &&
  child.children.length === 0 &&
  - setOpen(false)
  + (open = false)
  "
  />
  <span v-else>{{ child.text }}</span>
  @focusout="
  isLastItemOfArray(grandchild, child.children) &&
  isLastItemOfArray(child, item.children) &&
  - setOpen(false)
  + (open = false)
  "
  />
  </li>
  <NavLink
  v-else
  :item="child"
  - @focusout="isLastItemOfArray(child, item.children) && setOpen(false)"
  + @focusout="isLastItemOfArray(child, item.children) && (open = false)"
  />
  </li>
  </ul>
  