fix : 전표폼 로드시, 첫번째값 선택되서 보이도록 세팅

src/pages/app/documentManagementDetail.vue

@@ -16,9 +16,12 @@ onBeforeMount(async ()=>{
     result = await getSlipDetail(props.apprNo)
   }
   getDetailList(result)
+  apprLine.value = result.zwf0011t.apprs
+  selectedTab.value = apprLine.value[0].value
 })
 
 const notyf = useNotyf()
+const apprLine = ref<VTabsItem[]>([])
 const getDetailList = (item) => {
   console.log("getDetailList",item)
   params.contNo = item.contNo