test(openai-agents): Capture spans instead of reading from span recorder

[alexander-alderman-webb]

Description

Pre-requisite for copy-pasting an equivalent span first assertion.

Issues

Reminders

• Please add tests to validate your changes, and lint your code using uv run ruff.
• Add GH Issue ID & Linear ID (if applicable)
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

[github-actions]

Codecov Results 📊

✅ 130596 passed | ⏭️ 7110 skipped | Total: 137706 | Pass Rate: 94.84% | Execution Time: 474m 30s

📊 Comparison with Base Branch

Metric	Change
Total Tests	—
Passed Tests	📈 +1
Failed Tests	📉 -1
Skipped Tests	—

➖ Removed Tests (1)

View removed tests

• test_segment_uses_downsampled_rate
  • File: tests.test_monitor

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2509 uncovered lines.
❌ Project coverage is 90.25%. Comparing base (6b124bc) to head (39e875d).

Coverage diff

@@            Coverage Diff             @@
##        master       #PR       +/-##
==========================================
- Coverage    90.28%    90.25%    -0.03%
==========================================
  Files          193       193         —
  Lines        25724     25724         —
  Branches      9504      9504         —
==========================================
+ Hits         23222     23215        -7
- Misses        2502      2509        +7
- Partials      1433      1433         —

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