refactor(promotion/plan): 修改取消按钮大小和颜色

src/mobile/views/promotion/plan/index/index.vue

@@ -62,7 +62,9 @@
       @click="$router.push('/m/promotion_plan_editing')" />
     <!-- 底部-长按操作栏 -->
     <van-action-bar v-show="showSelect">
-      <span @click="showSelect = false">取消</span>
+      <van-action-bar-button type="default"
+        text="取消"
+        @click="clickChangeBelong" />
       <van-action-bar-button type="warning"
         text="修改归属人"
         @click="clickChangeBelong" />
@@ -334,6 +336,10 @@ const confirmPickerBelong = async (val) => {
     .van-action-bar {
       padding: 0 0 0 20px;
 
+      .van-button--default{
+        background-color: #f5f5f5;
+      }
+
       span {
         font-size: 14px;
         padding: 0 10px;