test(openai-agents): Replace mocks with httpx in non-error single-response tests
#6895
| Job | Run time |
|---|---|
| 6m 8s | |
| 5m 42s | |
| 3m 30s | |
| 5m 44s | |
| 5m 20s | |
| 9m 1s | |
| 2m 52s | |
| 3m 14s | |
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| 5m 7s | |
| 3s | |
| 51m 35s |