fix(商品详情): 转换对外action的参数做类型

@@ -44,7 +44,10 @@ export default {
     };
   },
   async getSelectedTradeProduct({state, commit, dispatch}, {productId, sizeId, tradeTypeId}) {
-    if (!(state.selectedProductInfo && state.selectedProductInfo.productId === productId ||
+    productId = parseInt(productId, 10);
+    sizeId = parseInt(sizeId, 10);
+    tradeTypeId = parseInt(tradeTypeId, 10);
+    if (!(state.selectedProductInfo && state.selectedProductInfo.productId == productId ||
       state.products.byId[productId])) {
       await dispatch('fetchProductInfo', {productId});
     }