Handle None span context in the span processor and pin tokenizers version for anthropic tests on Python 3.8

[alexander-alderman-webb]

Description

Issues

Reminders

• Please add tests to validate your changes, and lint your code using tox -e linters.
• 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

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Semver Impact of This PR

🟢 Patch (bug fixes)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

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New Features ✨

• (ai) Redact base64 data URLs in image_url content blocks by ericapisani in #5953
• (integrations) Instrument pyreqwest tracing by servusdei2018 in #5682

Bug Fixes 🐛

Anthropic

• Capture exceptions for stream() calls by alexander-alderman-webb in #5950
• Stop setting transaction status when child span fails by alexander-alderman-webb in #5717
• Only finish relevant spans in .create() patches by alexander-alderman-webb in #5716

Other

• (wsgi) Respect HTTP_X_FORWARDED_PROTO in request.url construction by sl0thentr0py in #5963

Internal Changes 🔧

• (anthropic) Separate sync and async .create() patches by alexander-alderman-webb in #5715
• (openai) Split token counting by API for easier deprecation by ericapisani in #5930
• (opentelemetry) Ignore mypy error by alexander-alderman-webb in #5927

• Pin tokenizers version for anthropic tests on Python 3.8 by alexander-alderman-webb in #5967

• Fix license metadata in setup.py by sl0thentr0py in #5934
• Update validate-pr workflow by stephanie-anderson in #5931

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_{🤖 This preview updates automatically when you update the PR.}

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Codecov Results 📊

✅ 13 passed | Total: 13 | Pass Rate: 100% | Execution Time: 8.82s

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 14859 uncovered lines.

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Generated by Codecov Action

[github-actions]

Codecov Results 📊

✅ 49 passed | ⏭️ 3 skipped | Total: 52 | Pass Rate: 94.23% | Execution Time: 12.18s

📊 Comparison with Base Branch

Metric	Change
Total Tests	—
Passed Tests	—
Failed Tests	—
Skipped Tests	—

✨ No test changes detected

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 15479 uncovered lines.
✅ Project coverage is 26.92%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
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+ Coverage    26.92%    26.92%        —%
==========================================
  Files          191       191         —
  Lines        21182     21182         —
  Branches      6960      6960         —
==========================================
+ Hits          5703      5703         —
- Misses       15479     15479         —
- Partials       495       495         —

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Generated by Codecov Action