Use the `readonly` attribute to render a textarea as readonly.
Interaction is enabled, but the textarea cannot be edited.
Events will be fired.

```html
<div class="max-w-[500px]">
  <sd-textarea
    value="Read only example Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod."
    size="lg"
    label="Label"
    rows="4"
    readonly
    spellcheck
  ></sd-textarea>
</div>
```