feat: i+n礼包提示：1+1商品数不能大于3

static/activity/js/oneplusmore.js

@@ -221,6 +221,12 @@ function addOnePlusMoreRewardTr(lvIdx, shushuIdx, stageIdx) {
     let gid = ++onePlusMoreRewardGid[stageKey]
     let prizes = escape('[]');
 
+
+    if($(`#OnePlusMoreRewardBody_${rewardKey}`).find('tr').length > 2){
+        alert('1+1商品数不能大于3')
+        return
+    }
+
     let goodSkuHtml = ""
     $.each(priceSkuMap, function (k, v) {
         goodSkuHtml += `<option value="${k}">${k}</option>`;