message: fix: lock sku scroll
diff: <template>
  - <van-popup v-model="show" v-if="!isSkuEmpty" position="bottom" :lock-scroll="true">
  + <van-popup v-model="show" v-if="!isSkuEmpty" position="bottom" lockOnScroll preventScroll>
  <div class="van-sku-container">
  <div class="van-sku-layout">
  <slot name="sku-header" :skuEventBus="skuEventBus" :selectedSku="selectedSku" :selectedSkuComb="selectedSkuComb">
  