fix(openai): Read input_text parts for the Responses API

[alexander-alderman-webb]

Description

Input text parts have the input_text type in the Responses API schema:

https://github.com/openai/openai-python/blob/ab76ab5c64b8d19761ce838891acc80743cd944a/src/openai/types/responses/response_input_text_param.py#L26

When I wrote this I incorrectly thought that the Responses text types were a superset of the Chat Completions type.

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 📊

✅ 2241 passed | ⏭️ 173 skipped | Total: 2414 | Pass Rate: 92.83% | Execution Time: 7m 21s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -135158
Passed Tests	📉 -128221
Failed Tests	—
Skipped Tests	📉 -6937

All tests are passing successfully.

❌ Patch coverage is 16.67%. Project has 15742 uncovered lines.
❌ Project coverage is 38.68%. Comparing base (base) to head (head).

Files with missing lines (2)

File	Patch %	Lines
sentry_sdk/ai/_openai_responses_api.py	9.52%	⚠️ 19 Missing
sentry_sdk/integrations/openai.py	66.67%	⚠️ 1 Missing

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
- Coverage    90.28%    38.68%    -51.6%
==========================================
  Files          193       193         —
  Lines        25664     25670        +6
  Branches      9458      9470       +12
==========================================
+ Hits         23168      9928    -13240
- Misses        2496     15742    +13246
- Partials      1433       533      -900

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