是否支持退换货逻辑修正优化

@@ -28,8 +28,8 @@
     <show-box>
         <ul class="service">
             <li><i class="icon icon-real"></i>100%品牌正品</li>
-            <li class="return" v-if="supportRefundExchange === 'Y'"><i class="icon icon-seven"></i>支持7天无理由退换货</li>
-            <li class="return" v-else><i class="icon icon-unsupport-seven"></i>不支持7天无理由退换货</li>
+            <li class="return" v-if="intro.supportRefundExchange === 'N'"><i class="icon icon-unsupport-seven"></i>不支持7天无理由退换货</li>
+            <li class="return" v-else><i class="icon icon-seven"></i>支持7天无理由退换货</li>
             <li><i class="icon icon-onlineservice"></i>便捷在线客服</li>
         </ul>
     </show-box>
@@ -512,7 +512,6 @@
                 isSoldOut: false,
                 isReady: false,
                 showPrefer: false, // TODO 为你优选大数据暂未实现，本期暂时屏蔽
-                supportRefundExchange: "Y",
                 preferTitle: '为你优选',
                 preferList: []
             };
@@ -621,7 +620,8 @@
 
                         // 是否支持7天无理由退换货
                         $.get(`/product/refundExchange/${data.product_skn}`).then(sd => {
-                            this.supportRefundExchange = sd.data[data.product_skn] === "N" ? "Y" : "N";
+                            let support = sd.data[data.product_skn] === "N" ? "Y" : "N";
+                            this.$set('intro.supportRefundExchange', support);
                         });
 
                         if(self.showPrefer) {