fix: change ghostClass color is bg-primary/20

src/layout/tabs/index.vue

@@ -305,7 +305,7 @@ const InternalTabs = defineComponent({
         easing='cubic-bezier(0, 0, 1, 1)'
         direction='horizontal'
         scrollSensitivity={100}
-        ghostClass='bg-primary/30'
+        ghostClass='bg-primary/20'
         onStart={onTabDraggableStart}
         onEnd={onTabDraggableEnd}
         onChoose={onTabDraggableChoose}