Renders a text area input field
<.textarea_input id="textarea-single-default" class="" placeholder="Type ...."> </.textarea_input>
<.textarea_input error id="textarea-single-error" class="" error_message="An unknown error occured." placeholder="Type ...."> </.textarea_input>
<.textarea_input disabled id="textarea-single-disabled" value="Typing is disabled for this field" class=""> </.textarea_input>