Dynamic Slider Items uses the same key when fade settings attribute is set to true.

Version: 0.25.2

* Steps to reproduce
* Use the following settings to render dynamic slider items
```
` const settings = {
fade: true,
autoplay:true,
infinite: true,
speed: 500,
slidesToShow: 1,
slidesToScroll: 1
}

{
images.map(function(item){
return (

window.location.href = item.banner_link} style={{backgroundImage:`url(${item.banner})`}} className="category-card" />
{/* */}

)
})
}
`
```