fix(Sku): check state when reset (#5231)

src/sku/Sku.js

@@ -277,13 +277,14 @@ export default createComponent({
     resetStepper() {
       const { skuStepper } = this.$refs;
       const { selectedNum } = this.initialSku;
-      const num = isDef(selectedNum) ? selectedNum : 1;
+      const num = isDef(selectedNum) ? selectedNum : this.startSaleNum;
       // 用来缓存不合法的情况
       this.stepperError = null;
 
       if (skuStepper) {
         skuStepper.setCurrentNum(num);
       } else {
+        // 当首次加载（skuStepper 为空）时，传入数量如果不合法，可能会存在问题
         this.selectedNum = num;
       }
     },

src/sku/components/SkuStepper.js

@@ -112,6 +112,7 @@ export default createComponent({
   methods: {
     setCurrentNum(num) {
       this.currentNum = num;
+      this.checkState(this.stepperMinLimit, this.stepperLimit);
     },
 
     onOverLimit(action) {