- update for possibility to have not selected carousel thumbnail (#139)

src/carousel/CarouselThumbnails.js

@@ -139,7 +139,7 @@ function CarouselThumbnails({
   return (
     <div className={clsx(className, styles.thumbs)}>
       <Tabs
-        value={mod(selected, count)}
+        value={selected ? mod(selected, count) : false}
         variant="scrollable"
         onChange={(_, index) => setSelected(index)}
         orientation={isVertical ? 'vertical' : 'horizontal'}