style: format code

components/vc-overflow/Item.tsx

@@ -78,7 +78,7 @@ export default defineComponent({
         overflowProps['aria-hidden'] = true;
       }
 
-      let itemNode = (
+      const itemNode = (
         <Component
           class={classNames(!invalidate && prefixCls)}
           style={overflowStyle}

components/vc-overflow/Overflow.tsx

@@ -344,7 +344,7 @@ const Overflow = defineComponent({
         );
       }
 
-      let overflowNode = (
+      const overflowNode = (
         <Component
           class={classNames(!invalidate.value && prefixCls, className)}
           style={style}