feat(openai): Gate Responses API inputs behind data collection

[ericapisani]

Respect data_collection.gen_ai.inputs when recording Responses API messages,
system instructions, and tool definitions, while preserving legacy
send_default_pii behavior.

Add coverage for enabled, disabled, default, and instruction-only inputs.

Refs PY-2588

[linear-code]

PY-2588

[github-actions]

Codecov Results 📊

✅ 100026 passed | ⏭️ 6925 skipped | Total: 106951 | Pass Rate: 93.53% | Execution Time: 350m 52s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📈 +560
Passed Tests	📈 +393
Failed Tests	📉 -1
Skipped Tests	📈 +168

➖ Removed Tests (1)

View removed tests

• 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 100.00%. Project has 2498 uncovered lines.
✅ Project coverage is 89.91%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    89.88%    89.91%    +0.03%
==========================================
  Files          193       193         —
  Lines        24754     24754         —
  Branches      8860      8870       +10
==========================================
+ Hits         22249     22256        +7
- Misses        2505      2498        -7
- Partials      1416      1412        -4

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