test: Run tracing tests in stream mode

[sentrivana]

Adapt tests of integrations we've already fully ported to span streaming so that they actually use span streaming everytime they define a traces_sampler or traces_sample_rate. Otherwise, they're implicitly using static tracing, and they'll break the moment we remove it.

Note: there are at least two tests in test_threading.py that also need this change but I'll submit them separately because those will need additional changes.

[github-actions]

Codecov Results 📊

✅ 117009 passed | ⏭️ 5544 skipped | Total: 122553 | Pass Rate: 95.48% | Execution Time: 396m 35s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -14986
Passed Tests	📉 -13420
Failed Tests	—
Skipped Tests	📉 -1566

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2256 uncovered lines.
✅ Project coverage is 90.45%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    90.25%    90.45%     +0.2%
==========================================
  Files          193       185        -8
  Lines        25655     23612     -2043
  Branches      9454      8664      -790
==========================================
+ Hits         23153     21356     -1797
- Misses        2502      2256      -246
- Partials      1435      1373       -62

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