ref(openai): Move input handling code into API-specific functions

[alexander-alderman-webb]

Description

Inline code from _commmon_set_input_data() to remove dead code in follow up PRs.

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

[github-actions]

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 ✨

Langchain

• Set gen_ai.operation.name and gen_ai.pipeline.name on LLM spans by ericapisani in #5849
• Broaden AI provider detection beyond OpenAI and Anthropic by ericapisani in #5707
• Update LLM span operation to gen_ai.generate_text by ericapisani in #5796

Internal Changes 🔧

Langchain

• Add text completion test by alexander-alderman-webb in #5740
• Add tool execution test by alexander-alderman-webb in #5739
• Add basic agent test with Responses call by alexander-alderman-webb in #5726
• Replace mocks with httpx types by alexander-alderman-webb in #5724
• Consolidate span origin assertion by alexander-alderman-webb in #5723
• Consolidate available tools assertion by alexander-alderman-webb in #5721

Other

• (openai) Move input handling code into API-specific functions by alexander-alderman-webb in #5687

• Temporarily stop running litellm tests by alexander-alderman-webb in #5851

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

[github-actions]

Codecov Results 📊

✅ 13 passed | Total: 13 | Pass Rate: 100% | Execution Time: 6.73s

All tests are passing successfully.

❌ Patch coverage is 0.00%. Project has 14438 uncovered lines.

Files with missing lines (1)

File	Patch %	Lines
openai.py	4.45%	⚠️ 623 Missing

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Generated by Codecov Action

[github-actions]

Codecov Results 📊

✅ 49 passed | ⏭️ 3 skipped | Total: 52 | Pass Rate: 94.23% | Execution Time: 12.35s

📊 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 1.39%. Project has 14964 uncovered lines.
❌ Project coverage is 27.21%. Comparing base (base) to head (head).

Files with missing lines (1)

File	Patch %	Lines
openai.py	9.24%	⚠️ 589 Missing and 1 partials

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
- Coverage    27.23%    27.21%    -0.02%
==========================================
  Files          189       189         —
  Lines        20508     20557       +49
  Branches      6706      6746       +40
==========================================
+ Hits          5585      5593        +8
- Misses       14923     14964       +41
- Partials       487       490        +3

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Generated by Codecov Action