fix(Carousel): pages calculation (#2345)

Co-authored-by: Edmund Chaplin <edmund.chaplin@zaros.co.uk>

src/runtime/components/elements/Carousel.vue

@@ -145,7 +145,13 @@ export default defineComponent({
         return 0
       }
 
-      return props.items.length - Math.round(carouselWidth.value / itemWidth.value) + 1
+      const itemDivisions = Math.round(carouselWidth.value / itemWidth.value)
+
+      if (props.items.length <= itemDivisions) {
+        return 0
+      }
+
+      return props.items.length - itemDivisions + 1
     })
 
     const isFirst = computed(() => currentPage.value <= 1)