test(cohere): Parametrize tests on the streaming trace lifecycle

[alexander-alderman-webb]

Description

These were missed when the integration was made to support span streaming.

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 📊

✅ 130608 passed | ⏭️ 7122 skipped | Total: 137730 | Pass Rate: 94.83% | Execution Time: 473m 56s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📈 +24
Passed Tests	📈 +24
Failed Tests	—
Skipped Tests	—

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2508 uncovered lines.
❌ Project coverage is 90.25%. Comparing base (36ff01e) to head (9d343f4).

Coverage diff

@@            Coverage Diff             @@
##        master       #PR       +/-##
==========================================
- Coverage    90.28%    90.25%    -0.03%
==========================================
  Files          193       193         —
  Lines        25729     25729         —
  Branches      9496      9496         —
==========================================
+ Hits         23228     23221        -7
- Misses        2501      2508        +7
- Partials      1432      1432         —

---

Generated by Codecov Action