chore(arq): Remove transaction-based tracing

[alexander-alderman-webb]

Description

Closes #7074

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 📊

✅ 106519 passed | ❌ 1 failed | ⏭️ 5461 skipped | Total: 111981 | Pass Rate: 95.12% | Execution Time: 369m 43s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -7942
Passed Tests	📉 -6638
Failed Tests	—
Skipped Tests	📉 -1304

➕ New Tests (1)

View new tests

• test_span_streaming_quart_auth_user_id[42-True]
  • File: tests.integrations.quart.test_quart
  • Status: ❌ Failing

➖ Removed Tests (1)

View removed tests

• test_span_streaming_quart_auth_user_id[42-True]
  • File: tests.integrations.quart.test_quart

❌ Failed Tests

test_span_streaming_quart_auth_user_id[42-True]

File: tests.integrations.quart.test_quart
Suite: py3.13-quart-v0.19.9
Error: KeyError: 'user.id'

Stack Trace

tests/integrations/quart/test_quart.py:1039: in test_span_streaming_quart_auth_user_id
    assert segment["attributes"]["user.id"] == user_id
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
E   KeyError: 'user.id'

✅ Patch coverage is 100.00%. Project has 2271 uncovered lines.
✅ Project coverage is 90.5%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    90.21%    90.50%    +0.29%
==========================================
  Files          193       185        -8
  Lines        25423     23906     -1517
  Branches      9336      8800      -536
==========================================
+ Hits         22933     21635     -1298
- Misses        2490      2271      -219
- Partials      1436      1378       -58

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