fix(销售页面): 将价格输入框类型改为digit并修改成功后的跳转逻辑

将价格输入框的type从text改为digit以限制输入为数字
创建车辆成功后改为返回上一页而不是跳转到首页

@@ -219,7 +219,7 @@
                     </view>
                     <view class="form-item-right">
                         <text class="price-symbol">¥</text>
-                        <input v-model="formData.price" placeholder="请输入" type="text" class="price-input" />
+                        <input v-model="formData.price" placeholder="请输入" type="digit" class="price-input" />
                     </view>
                 </view>
 
@@ -230,7 +230,7 @@
                     </view>
                     <view class="form-item-right">
                         <text class="market-price-symbol">¥</text>
-                        <input v-model="formData.market_price" placeholder="请输入" type="text"
+                        <input v-model="formData.market_price" placeholder="请输入" type="digit"
                             class="market-price-input" />
                     </view>
                 </view>
@@ -761,7 +761,7 @@ const createCar = async (data) => {
             icon: 'success',
             duration: 2000,
             complete: () => {
-                Taro.switchTab({ url: '/pages/index/index' })
+                Taro.navigateBack()
             }
         })
     }