test: Assert presence of profile chunks after shutdown

[alexander-alderman-webb]

Description

Assert telemetry has been collected only after the continuous profiler shuts down. This removes the race where profiles had not yet reached the transport by the time the assertions ran.

According to the logs in the following failed run

https://github.com/getsentry/sentry-python/actions/runs/25110581685/job/73583219162

the test fails with the following stack trace:

_ test_continuous_profiler_manual_start_and_stop_sampled[non-experiment-start_profile_session/stop_profile_session  (deprecated)-thread] _
tests/profiler/test_continuous_profiler.py:362: in test_continuous_profiler_manual_start_and_stop_sampled
    assert_single_transaction_with_profile_chunks(envelopes, thread)
tests/profiler/test_continuous_profiler.py:147: in assert_single_transaction_with_profile_chunks
    assert len(items["profile_chunk"]) > 0
E   assert 0 > 0
E    +  where 0 = len([])

The stack trace shows that profiles were not collected in the test transport by the time the assertion is executed.

Issues

Reminders

• Please add tests to validate your changes, and lint your code using tox -e linters.
• 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 📊

✅ 13 passed | Total: 13 | Pass Rate: 100% | Execution Time: 8.53s

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 14904 uncovered lines.

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