[]byte Parameter Results in Unexpected Integer Type

I am facing an issue with Golang-to-Python interoperability. Specifically, when I call a Python function from Golang and pass a []byte data as a parameter, the Python function unexpectedly receives an integer instead of the intended MengByte/bytes object.

Code:

test.go
```go
package hujan

type MengByte []byte
type Fungsi func(MengByte)

func Test(fun Fungsi) {
fun(MengByte{255, 211, 21, 23, 0, 1, 2, 3, 82, 2, 33})
}
```

test.py
```python
from out.hujan import Test, MengByte

def fun(arg: MengByte):
print('arg: ', type(arg))
return arg

Test(fun)
```

I would appreciate assistance in resolving this issue and ensuring that the Python function correctly receives the MengByte/bytes object.

从提供的 test.go 和 test.py 复现开始，然后检查为 Test 生成的 wrapper 以及 MengByte 参数的转换。运行示例，确认 Python 回调接收到的是整数。当基于 []byte 的 MengByte 值以 bytes 对象而不是整数的形式暴露给 Python 时，即表示完成。

由索引模型根据 Issue 内容生成。