HTMLOptionElement.defaultSelected deviates from standard APIs

[jespertheend]

const optionEl = document.createElement("option");
optionEl.defaultSelected = true;
console.log(optionEl.outerHTML);

In browsers the above outputs <option selected=""></option>, but in Deno I get <option></option>

[jespertheend]

Fwiw, a workaround is to use optionEl.setAttribute("selected", ""); instead.

[jespertheend]

Seems like HTMLInputElement.defaultChecked is affected as well