[BUG] [Go Service]Response code is 404 when request product bundle without version in Get available versions of a product api

[JiLiang888]

Describe the bug
[BUG] [Go Service]Response code is 404 when request product bundle without version in Get available versions of a product api

To Reproduce
Steps to reproduce the behavior:

1. Go to '/translation/products/{productName}/versionlist'
2. Input productName= test1 ( under test1 bundle , has no version)
3. See response

Expected behavior
{
"response": {
"code": 200,
"message": "OK",
"serverTime": ""
},
"signature": "",
"data": {
"versions": [],
"productName": "test1"
}
}

commit 5466146