Allow aria-hidden argument

[chancancode]

This is already supported and tested:

ember-svg-jar/packages/ember-svg-jar/tests/integration/helpers/svg-jar-test.js

Lines 109 to 122 in 4c3db50

	test('it allows to set a11y SVG attributes for decorative images', async function (assert) {
	await render(
	hbs`{{svg-jar "icon" role="presentation" data-test-id="one"}}`
	);
	assert.dom('[data-test-id="one"]').hasAttribute('role', 'presentation');
	await render(hbs`{{svg-jar "icon" role="none" data-test-id="two"}}`);
	assert.dom('[data-test-id="two"]').hasAttribute('role', 'none');
	await render(
	hbs`{{svg-jar "icon" aria-hidden="true" data-test-id="three"}}`
	);
	assert.dom('[data-test-id="three"]').hasAttribute('aria-hidden', 'true');
	});

It is considered a best practice to use aria-hidden on decorative SVGs: https://www.unimelb.edu.au/accessibility/techniques/accessible-svgs

[evoactivity]

embroider optimized is expected to fail at the moment.

I'll cut a release tomorrow morning.