`<select/>` vs. `selected`

```ts
morph(root, `<select>
   <option selected>foo</option>
   <option>bar</option>
</select>`);

morph(root, `<select>
   <option>foo</option>
   <option selected>bar</option>
</select>`);
```

**Displayed**: `[foo]` (bug)
**Must be**: `[bar]`