feat(approve): standardize application type display across detail and list views

- Replace dynamic apply_type binding with static "费用减免申请" text in detail page
- Update list view card title to display static application type instead of dynamic value
- Ensure consistent application type display across approval workflow pages

pages/approve/detail.vue

@@ -3,7 +3,7 @@
         <view class="section">
             <view class="section-title">申请信息</view>
             <u-cell-group>
-                <u-cell title="申请类型" :value="detail.apply_type"></u-cell>
+                <u-cell title="申请类型" value="费用减免申请"></u-cell>
                 <u-cell title="客户名称" :value="detail.customer_name"></u-cell>
                 <u-cell title="减免明细" :value="detail.relief_detail"></u-cell>
                 <u-cell title="申请时间" :value="detail.create_time_cn"></u-cell>

pages/approve/index.vue

@@ -10,7 +10,7 @@
 
         <view class="list-wrap">
             <view class="approve-card" v-for="item in currentList" :key="item.id">
-                <view class="card-title">{{ item.apply_type }}</view>
+                <view class="card-title">费用减免申请</view>
                 <view class="card-body">
                     <view class="card-row row">
                         <text class="card-label">申请人：</text>