refator: 配件选择组件优化

src/components/select-parts/index.vue

@@ -15,7 +15,7 @@
             可用{{ info.stock }}件
           </view>
           <view class="num">
-            <u-number-box v-if="!info.disabled" v-model="info.quantity" :min="info.min || 0" :max="info.max || info.quantity" @change="numChange"></u-number-box>
+            <u-number-box v-show="!info.disabled" v-model="info.quantity" :min="info.min || 0" :max="info.max || info.quantity" @change="numChange"></u-number-box>
             <u-button v-if="info.disabled" type="primary" size="mini" shape="circle" @click="addApply">加入申请</u-button>
           </view>
         </view>