fix(pydantic-ai): Only use hooks when ModelRequestContext.model exists

[alexander-alderman-webb]

Description

Prevent

AttributeError: 'ModelRequestContext' object has no attribute 'model'

raised, e.g., with version 1.71.0 of Pydantic AI in the generated test suite of #6437

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 📊

✅ 88053 passed | ⏭️ 6009 skipped | Total: 94062 | Pass Rate: 93.61% | Execution Time: 295m 34s

📊 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 72.22%. Project has 2311 uncovered lines.
✅ Project coverage is 89.97%. Comparing base (base) to head (head).

Files with missing lines (1)

File	Patch %	Lines
sentry_sdk/integrations/pydantic_ai/init.py	68.75%	⚠️ 5 Missing and 1 partials

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    89.96%    89.97%    +0.01%
==========================================
  Files          191       191         —
  Lines        23031     23040        +9
  Branches      7906      7908        +2
==========================================
+ Hits         20719     20729       +10
- Misses        2312      2311        -1
- Partials      1306      1308        +2

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Generated by Codecov Action

[cursor]

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

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