fix(myCar): 修复车辆信息显示条件渲染问题

添加条件渲染判断，防止车辆信息字段为空时显示undefined

 <!--
  * @Date: 2022-09-19 14:11:06
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-08-13 17:21:54
+ * @LastEditTime: 2025-08-18 16:34:15
  * @FilePath: /jgdl/src/pages/myCar/index.vue
  * @Description: 文件描述
 -->
@@ -42,7 +42,7 @@
                 />
               </view>
               <view class="flex-1 ml-4">
-                <text class="font-medium text-base block">{{ car.manufacture_year }}款 {{ car.brand }} {{ car.model }}</text>
+                <text class="font-medium text-base block"><text v-if="car.manufacture_year">{{ car.manufacture_year }}款</text> <text v-if="car.brand">{{ car.brand }}</text> <text v-if="car.model">{{ car.model }}</text></text>
                 <!-- 状态标识 -->
                 <view class="status-badges">
                   <!-- <view v-if="car.verification_status" class="status-badge" :class="getVerificationStatusClass(car.verification_status)">
@@ -56,7 +56,7 @@
                     <text>{{ reviewStatus[car.review_status] }}</text>
                   </view>
                 </view>
-                <text class="text-sm text-gray-500 mt-1 block">续航{{ car.range_km }}km | 最高时速{{ car.max_speed_kmh }}km/h</text>
+                <text class="text-sm text-gray-500 mt-1 block"><text v-if="car.range_km">续航{{ car.range_km }}km</text>  <text v-if="car.max_speed_kmh">最高时速{{ car.max_speed_kmh }}km/h</text></text>
                 <!-- 审核原因 -->
                 <view v-if="car.review_reason" class="verification-reason mt-1">
                   <nut-config-provider :theme-vars="themeVars">