ref(openai-agents): Stop setting gen_ai.request.available_tools on Execute Tool spans

[alexander-alderman-webb]

Description

This doesn't make any sense. A tool execution doesn't have available tools.

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 📊

✅ 99633 passed | ❌ 1 failed | ⏭️ 6757 skipped | Total: 106391 | Pass Rate: 93.65% | Execution Time: 358m 29s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -160
Passed Tests	📉 -136
Failed Tests	—
Skipped Tests	📉 -24

➕ New Tests (1)

View new tests

• test_continuous_profiler_auto_start_and_stop_sampled[non-experiment-gevent]
  • File: tests.profiler.test_continuous_profiler
  • Status: ❌ Failing

➖ Removed Tests (1)

View removed tests

• test_continuous_profiler_auto_start_and_stop_sampled_span_streaming[non-experiment-thread]
  • File: tests.profiler.test_continuous_profiler

❌ Failed Tests

test_continuous_profiler_auto_start_and_stop_sampled[non-experiment-gevent]

File: tests.profiler.test_continuous_profiler
Suite: py3.6-gevent
Error: AssertionError: profiler should not be running assert '2bcfa090f5db41139dc441407421b6e2' is None + where '2bcfa090f5db41139dc441407421b6e2' = get_profiler_id()

Stack Trace

tests/profiler/test_continuous_profiler.py:812: in test_continuous_profiler_auto_start_and_stop_sampled
    assert get_profiler_id() is None, "profiler should not be running"
E   AssertionError: profiler should not be running
E   assert '2bcfa090f5db41139dc441407421b6e2' is None
E    +  where '2bcfa090f5db41139dc441407421b6e2' = get_profiler_id()

✅ Patch coverage is 100.00%. Project has 2504 uncovered lines.
✅ Project coverage is 89.89%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    89.89%    89.89%        —%
==========================================
  Files          193       193         —
  Lines        24686     24756       +70
  Branches      8814      8862       +48
==========================================
+ Hits         22188     22252       +64
- Misses        2498      2504        +6
- Partials      1400      1415       +15

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