feat(ComparisonSlider): add out animation for SliderLine

src/widgets/ComparisonSlider/ui/ComparisonSlider/components/SliderLine.svelte

@@ -19,6 +19,7 @@ interface Props {
 }
 let { sliderPos, isDragging }: Props = $props();
 </script>
+
 <div
     class={cn(
         'absolute inset-y-2 sm:inset-y-4 pointer-events-none -translate-x-1/2 z-50 flex flex-col justify-center items-center',
@@ -30,6 +31,7 @@ let { sliderPos, isDragging }: Props = $props();
     style:left="{sliderPos}%"
     style:will-change={isDragging ? 'left' : 'auto'}
     in:fade={{ duration: 300, delay: 150, easing: cubicOut }}
+    out:fade={{ duration: 150, easing: cubicOut }}
 >
     <!-- We use part of lucide cursor svg icon as a handle -->
     <svg