ref(mcp): Inline _prepare_handler_data()

[alexander-alderman-webb]

Description

Remove unnecessary indirection by inlining _prepare_handler_data().

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 📊

✅ 98741 passed | ⏭️ 6806 skipped | Total: 105547 | Pass Rate: 93.55% | Execution Time: 361m 15s

📊 Comparison with Base Branch

Metric	Change
Total Tests	—
Passed Tests	📈 +2
Failed Tests	📉 -2
Skipped Tests	—

➖ Removed Tests (2)

View removed tests

• test_circular_references_span_streaming
  • File: tests.tracing.test_misc
• test_continuous_profiler_auto_start_and_stop_sampled_span_streaming[experiment-thread]
  • File: tests.profiler.test_continuous_profiler

All tests are passing successfully.

❌ Patch coverage is 30.00%. Project has 2560 uncovered lines.
❌ Project coverage is 89.56%. Comparing base (base) to head (head).

Files with missing lines (1)

File	Patch %	Lines
sentry_sdk/integrations/mcp.py	30.00%	⚠️ 14 Missing

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
- Coverage    89.60%    89.56%    -0.04%
==========================================
  Files          193       193         —
  Lines        24529     24531        +2
  Branches      8676      8678        +2
==========================================
+ Hits         21979     21971        -8
- Misses        2550      2560       +10
- Partials      1400      1400         —

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[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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