HTMLElement.contentEditable should apply the contenteditable attribute.

[mozesstumpf]

Describe the bug
When changing the HTMLElement.contentEditable property, the element does not get the contenteditable attribute.

To Reproduce
Repository to reproduce: https://github.com/mozesstumpf/contentEditable-attribute-should-change

test("ContentEditable attribute should change", () => {
	const div = document.createElement("div");

	div.contentEditable = "true";

	// should be passed
	expect(div.getAttribute("contenteditable")).toBe("true");
});

Expected behavior
The contenteditable attribute should be added to the element when the HTMLElement.contentEditable changed.

[capricorn86]

Thank you for reporting @mozesstumpf! 🙂

Thanks to @karpiuMG there is a fix in.