[Go] Tool Calls in OpenAI Plugin Fails

[kingsleyzhong]

Describe the bug

When using tool calls with OpenAI the tool call ID is not passed properly in the messages.

Sample error message:
failed to create completion: POST "https://api.openai.com/v1/chat/completions": 400 Bad Request { "error": { "message": "Invalid parameter: messages with role 'tool' must be a response to a preceeding message with 'tool_calls'.", "type": "invalid_request_error", "param": "messages.[5].role", "code": null } }

To Reproduce
Define any tool with Go and attempt to generate using an OpenAI model that supports tool calling. (ie. openai/gpt-4.1).

Expected behavior
Tool call succeeds.

Runtime (please complete the following information):

• OS: MacOS

** Go version
go1.24.1 darwin/arm64

Additional context
I have a fix. Opening PR.

[kingsleyzhong]

Don't have permissions to link PR's but change is here: #3248