[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 5466146a03652634432a76a97652b550b9b51e19