Setting a new icon to LeftIconItem, the previous one is not removed correctly

[Dudeplayz]

Describe the bug

Setting a new icon to LeftIconItem the previous item is not removed.
Possibly caused by a copy & paste action.

vaadin-app-layout/app-layout-addon/src/main/java/com/github/appreciated/app/layout/component/menu/left/items/LeftIconItem.java

Lines 42 to 50 in 7271e33

	public void setIcon(Component icon) {
	if (this.icon != null) {
	remove(caption);
	}
	this.icon = icon;
	if (icon != null) {
	getElement().insertChild(0, this.icon.getElement());
	}
	}

Line 44 has to be:

remove(icon);

Expected behavior

The previous item is removed correctly.

Additional Information (please complete the following information):

• Version 21.0.0-beta1