Calling focus on a disabled input should not fire focus event or change focus of active element

[marchaos]

Describe the bug
As per the spect (see https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/disabled#attribute_interactions), calling focus() on an input element that is disabled should fire focus or change the active element.

To Reproduce
Steps to reproduce the behavior:
Discovered when attempting to convert tests from jsdom to happy-dom

    it('input should not have focus if disabled', () => {
        props.disabled = true;
        renderComponent();

        screen.getByTestId('input').focus();

        expect(screen.getByTestId('input')).not.toHaveFocus();
    });

Expected behavior
Calling focus() when an input is disabled should not dispatch any events