refactor(ContractSelect): 优化选中合同的加载逻辑

将原有的列表搜索获取选中合同的方式，改为直接调用getOrder接口单个查询，简化代码逻辑并提升查询效率

klp-ui/src/components/KLPService/ContractSelect/index.vue

@@ -116,7 +116,7 @@
 </template>
 
 <script>
-import { listOrder, listTodayOrder } from '@/api/crm/order';
+import { listOrder, listTodayOrder, getOrder } from '@/api/crm/order';
 
 export default {
     name: "ContractSelect",
@@ -314,14 +314,13 @@ export default {
                 this.contractList = res.rows || [];
                 // 初始加载时，确保已选中的合同在列表中
                 if (!query && this.value && !this.contractList.some(item => String(item.orderId) === String(this.value))) {
-                    const res2 = await listOrder({
+                    try {
-                        pageNum: 1,
+                        const contract = await getOrder(this.value);
-                        pageSize: 100,
+                        if (contract.data) {
-                        keyword: this.value,
+                            this.contractList.unshift(contract.data);
-                    });
+                        }
-                    const found = (res2.rows || []).find(item => String(item.orderId) === String(this.value));
+                    } catch (e) {
-                    if (found) {
+                        console.error('Failed to fetch selected contract:', e);
-                        this.contractList.unshift(found);
                     }
                 }
             } catch (error) {