SBBJ-1134 PC收货订单新增单位必填取消，不填单位值为空，接口传也是空（不是null），有不是接口传来的订单，采购人员直接在QAD维护的没有填单位，这边也需要不填单位传接口，QAD才能接收

src/views/eam/item/itemOrderMain/itemOrderMain.data.ts

@@ -225,5 +225,5 @@ export const ItemOrderDetailRules = reactive({
   serialNumber: [{ required: true, message: '请输入订单行', trigger: 'blur' }],
   itemNumber: [{ required: true, message: '请输入备件编号', trigger: 'blur' }],
   itemName: [{ required: true, message: '请输入备件名称', trigger: 'blur' }],
-  uom: [{ required: true, message: '请输入备件单位', trigger: 'blur' }]
+  // uom: [{ required: true, message: '请输入备件单位', trigger: 'blur' }]
 })