fix(tracer): wrap asyncio only when active trace context

[taegyunkim]

See linked issue #8907 and release note for details.

Checklist

• PR author has checked that all the criteria below are met
• The PR description includes an overview of the change
• The PR description articulates the motivation for the change
• The change includes tests OR the PR description describes a testing strategy
• The PR description notes risks associated with the change, if any
• Newly-added code is easy to change
• The change follows the library release note guidelines
• The change includes or references documentation updates if necessary
• Backport labels are set (if applicable)

Reviewer Checklist

• Reviewer has checked that all the criteria below are met
• Title is accurate
• All changes are related to the pull request's stated goal
• Avoids breaking API changes
• Testing strategy adequately addresses listed risks
• Newly-added code is easy to change
• Release note makes sense to a user of the library
• If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• Backport labels are set in a manner that is consistent with the release branch maintenance policy

[github-actions]

CODEOWNERS have been resolved as:

releasenotes/notes/tracer-asyncio-create_task-wrap-3d171cb8429be8a7.yaml  @DataDog/apm-python
ddtrace/contrib/internal/asyncio/patch.py                               @DataDog/apm-core-python @DataDog/apm-idm-python
tests/contrib/suitespec.yml                                             @DataDog/apm-core-python @DataDog/apm-idm-python

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 230 ± 2 ms.

The average import time from base is: 233 ± 1 ms.

The import time difference between this PR and base is: -2.48 ± 0.07 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 2.041 ms (0.89%)

ddtrace.bootstrap.sitecustomize 1.336 ms (0.58%)

ddtrace.bootstrap.preload 1.336 ms (0.58%)

ddtrace.internal.products 1.336 ms (0.58%)

ddtrace.internal.remoteconfig.client 0.631 ms (0.27%)

ddtrace 0.705 ms (0.31%)

ddtrace._logger 0.035 ms (0.02%)

logging 0.035 ms (0.02%)

traceback 0.035 ms (0.02%)

contextlib 0.035 ms (0.02%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-05-03 02:50:08

Comparing candidate commit 3ec1f0c in PR branch taegyunkim/py37-asyncio-patch with baseline commit 40fe58d in branch main.

Found 0 performance improvements and 1 performance regressions! Performance is the same for 510 metrics, 9 unstable metrics.

scenario:iast_aspects-splitlines_aspect

• 🟥 execution_time [+113.159ns; +140.278ns] or [+7.777%; +9.641%]