fix: 修复modbus命令功能码未进行16进制转换

@@ -41,7 +41,7 @@ export const composeModbusModalData = (record: ModbusCommandValueType): GenModbu
   return {
     crc,
     deviceCode,
-    method,
+    method: Number(method).toString(16).padStart(2, '0'),
     registerAddr,
     ...registerInfo(record),
   };