修复ghost card 模式问题

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src/components/d2-container/components/d2-container-card.vue

@@ -3,8 +3,8 @@
     <div v-if="$slots.header" class="d2-container-card__header" ref="header">
       <slot name="header"/>
     </div>
-    <div class="d2-container-card__body">
-      <div class="d2-container-card__body-card" ref="body">
+    <div class="d2-container-card__body" ref="body">
+      <div class="d2-container-card__body-card">
         <slot/>
       </div>
     </div>
@@ -20,6 +20,14 @@ export default {
   name: 'd2-container-card',
   mixins: [
     scroll
-  ]
+  ],
+  mounted () {
+    // 增加滚动事件监听
+    this.addScrollListener()
+  },
+  beforeDestroy () {
+    // 移除滚动事件监听
+    this.removeScrollListener()
+  }
 }
 </script>

src/components/d2-container/components/d2-container-ghost.vue

@@ -18,6 +18,14 @@ export default {
   name: 'd2-container-ghost',
   mixins: [
     scroll
-  ]
+  ],
+  mounted () {
+    // 增加滚动事件监听
+    this.addScrollListener()
+  },
+  beforeDestroy () {
+    // 移除滚动事件监听
+    this.removeScrollListener()
+  }
 }
 </script>