src/vs/base/browser/ui/hover/hoverWidget.ts/HoverAction/setEnabled
class HoverAction:	public setEnabled(enabled: boolean): void {
		if (enabled) {
			this.actionContainer.classList.remove('disabled');
			this.actionContainer.removeAttribute('aria-disabled');
		} else {
			this.actionContainer.classList.add('disabled');
			this.actionContainer.setAttribute('aria-disabled', 'true');
		}
	}