fix(scroll-nav): use setTimeout to fix vue2.6 nextTick

nextTick is faster than events

Author: dolymood

src/components/scroll-nav/scroll-nav.vue

@@ -139,7 +139,7 @@
         this.active = label
         // waiting touchend
         // so the inner scroll won't affect the touchend logic
-        this.$nextTick(() => {
+        setTimeout(() => {
           this.jumpTo(label)
         })
       },