defineEventProperty is not accepting array of strings

[compulim]

Today, the following code is no-op.

defineEventProperty(Foo.prototype, ['change', 'click']);

That means, the following code never fire.

new Foo().onchange = () => console.log('Fired');

We should change it to

defineEventProperty(Foo.prototype, 'change');
defineEventProperty(Foo.prototype, 'click');