fix:查看合同时，判断是否为非合同工单

(cherry picked from commit 99959de03328d9523f053007f2916b06261429df)

src/views/business/production/onceWork/index.vue

@@ -515,7 +515,7 @@
   const viewContract = (row) =>{
     const id = row.contractId || ids.value;
     if(id === "0"){
-      proxy.$modal.msgError("此工单为非合同工单");
+      proxy.$modal.msgError("此工单为非合同工单，所以没有合同");
     }else{
       proxy.$refs.contractRef.open(id);
     }