chore(aiohttp): Remove transaction-based tracing

[sentrivana]

Lots of tests that haven't been converted... :(

Closes https://linear.app/getsentry/issue/PY-2675/remove-transaction-based-tracing-from-aiohttp

[linear-code]

PY-2675

[github-actions]

Codecov Results 📊

✅ 100186 passed | ❌ 3 failed | ⏭️ 4494 skipped | Total: 104683 | Pass Rate: 95.7% | Execution Time: 348m 19s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -33012
Passed Tests	📉 -30399
Failed Tests	📈 +3
Skipped Tests	📉 -2616

➕ New Tests (2)

View new tests

• test_chat_completion_data_collection[gen-ai-outputs-enabled-inputs-disabled]
  • File: tests.integrations.litellm.test_litellm
  • Status: ❌ Failing
• test_cache_spans_item_size
  • File: tests.integrations.django.test_cache_module
  • Status: ❌ Failing

❌ Failed Tests

test_chat_completion_data_collection[gen-ai-outputs-enabled-inputs-disabled]

File: tests.integrations.litellm.test_litellm
Suite: py3.10-litellm-v1.83.14
Error: ValueError: too many values to unpack (expected 1)

Stack Trace

tests/integrations/litellm/test_litellm.py:3394: in test_chat_completion_data_collection
    (event,) = events
E   ValueError: too many values to unpack (expected 1)

test_cache_spans_item_size

File: tests.integrations.django.test_cache_module
Suite: py3.13-django-v5.2.17
Error: tests/integrations/django/test_cache_module.py:526: in test_cache_spans_item_size assert not spans[0]["attributes"]["cache.hit"] E assert not True

Stack Trace

tests/integrations/django/test_cache_module.py:526: in test_cache_spans_item_size
    assert not spans[0]["attributes"]["cache.hit"]
E   assert not True

✅ Patch coverage is 92.00%. Project has 2265 uncovered lines.
✅ Project coverage is 90.42%. Comparing base (base) to head (head).

Files with missing lines (1)

File	Patch %	Lines
sentry_sdk/integrations/aiohttp.py	92.00%	⚠️ 6 Missing and 4 partials

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    90.24%    90.42%    +0.18%
==========================================
  Files          193       185        -8
  Lines        25715     23644     -2071
  Branches      9502      8688      -814
==========================================
+ Hits         23206     21379     -1827
- Misses        2509      2265      -244
- Partials      1433      1365       -68

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