label: should check ariaLabelledByElements as well #4943

Product

axe-core

Product Version

4.10.3

Latest Version

• I have tested the issue with the latest version of the product

Issue Description

Expectation

Get ariaLabelledByElements value if possible for label value as well.

Actual

Only get aria-labelledby attribute, and don't parse ariaLabelledByElements value.

How to Reproduce

<p>Test label</p>
<input type="text" />

document.querySelector('input').ariaLabelledByElements = [document.querySelector('p')];

Additional context

When using custom element with shadow dom, it's the only way to refer to outer element.