<label for="foo"> isn't followed on IE #28
Description
17/116 unit tests currently fail on Internet Explorer.
e.g.
fit('understands label for', () => {
render(
html`
<button id="foo">text</button>
<label for="foo">bar</label>`,
container);
const elem = document.getElementById('foo');
expect(computeTextAlternative(elem!)).toBe('bar');
});This passes on chrome and firefox but IE gives elem an accessible name of text.