ref(mcp): Inline _set_span_output_data()

[alexander-alderman-webb]

Description

Remove unnecessary indirection by inlining _set_span_output_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 20s

📊 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 78.57%. Project has 2562 uncovered lines.
✅ Project coverage is 89.55%. Comparing base (base) to head (head).

Files with missing lines (1)

File	Patch %	Lines
sentry_sdk/integrations/mcp.py	78.57%	⚠️ 12 Missing and 12 partials

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    89.54%    89.55%    +0.01%
==========================================
  Files          193       193         —
  Lines        24514     24514         —
  Branches      8674      8674         —
==========================================
+ Hits         21949     21952        +3
- Misses        2565      2562        -3
- Partials      1398      1402        +4

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