aria-disabled=true input still receives label click to trigger on change

[oliverfoster]

If an input element has [aria-disabled=true] it is prevented from receiving click events by:

adapt-contrib-core/js/a11y/browserFocus.js

Lines 72 to 76 in 3cec6f1

	const isAriaDisabled = $element.closest('[aria-disabled=true]').length === 1;
	if (isAriaDisabled) {
	event.preventDefault();
	event.stopImmediatePropagation();
	}

However any associated label[for] is not prevented from receiving click events, those events propagate to the input and allow it to trigger a change event on the input in spite of its [aria-disabled=true] status.

This is a relatively new issue create by switching mcq and gmcq to [aria-disabled=true] from [disabled] in order to better facilitate screen readers at pr adaptlearning/adapt-contrib-mcq#228