[Bug]: Missing completion_token_details in response obj passed to custom callback for Response API and gpt-5-codex responses

### What happened?

For Azure LLM Provider, the response object passed to custom callback for Response API and gpt-5-codex responses has missing completion_token_details attribute.

### Relevant log output

```shell

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### Are you a ML Ops Team?

No

### What LiteLLM version are you on ?

1.80.0

### Twitter / LinkedIn details

_No response_