style(flowable): 优化流程相关代码的import顺序和代码结构

openhis-ui-vue3/src/template/surgicalPatientHandover.vue

@@ -560,8 +560,7 @@
 defineOptions({
   name: 'SurgicalPatientHandover',
 });
-import { getCurrentInstance, onBeforeMount, onMounted, reactive } from 'vue';
-import { ElMessageBox, ElMessage, ElLoading, ElTree } from 'element-plus';
+import {getCurrentInstance, onBeforeMount, onMounted, reactive} from 'vue';
 import useOptionsList from './useOptionsList';
 // import { A } from '../../dist/assets/api-DmiMW8YF';
 const { statisticsOptionList, getStatisticsOptionList } = useOptionsList();