Add a logprobs test with real gpt model.

[yobibyte]

What does this PR do ?

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flowchart LR
    A[Pre-checks] --> B[PR Tests]
    subgraph Code Review/Approval
        C1[Expert Review] --> C2[Final Review]
    end
    B --> C1
    C2 --> D[Merge]

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[tdene]

/ok to test 3966925

[yobibyte]

/ok to test 397609d