fix: Bug #417 住院护士站记账页面空白（补充provide handleGetPrescription修复inject失败）

openhis-ui-vue3/src/views/inpatientNurse/InpatientBilling/index.vue

@@ -60,7 +60,7 @@
 </template>
 
 <script setup>
-import {nextTick, ref} from 'vue';
+import {nextTick, provide, ref} from 'vue';
 import {ElMessage} from 'element-plus';
 import PatientList from '../components/patientList.vue';
 import BillingList from './components/billingList.vue';
@@ -87,6 +87,14 @@ function handleClick() {
   // 可以在这里添加左侧标签切换的逻辑
 }
 
+// 🔧 BugFix#417: 提供handleGetPrescription给子组件
+function handleGetPrescription() {
+  if (billingRef.value) {
+    billingRef.value.handleQuery?.();
+  }
+}
+provide('handleGetPrescription', handleGetPrescription);
+
 // 右侧标签页切换
 function handleTabChange() {
   // 切换到划价确费标签时，刷新数据