商品管理编辑更新，修复单规格多规格切换保存报错问题，增加部分必填项验证

pageProduct/goodsData.js

@@ -28,16 +28,17 @@ export const $types = [{
 
 // 商品默认sku
 export const $defaultSku = {
-	salePrice: 0,
-	memberPrice: 0,
-	costPrice: 0,
-	originPrice: 0,
-	stockNumber: 0,
-	firstShared: 0,
-	suit: 0,
+	salePrice: '',
+	memberPrice: '',
+	costPrice: '',
+	originPrice: '',
+	stockNumber: '',
+	firstShared: '',
+	suit: 1,
 	barCode: `${uni.getStorageSync("shopId")}${dayjs().valueOf()}`,
 }
 
+
 // 库存记录筛选类型
 export const $invoicingType = [{
 		text: '全部',