Flaky test: test_massage_empty

[devinfra-flakiness]

Flaky Test Detected

Test: tests/snuba/sessions/test_sessions_v2.py::test_massage_empty

Statistics over the last 30 days:
* Runs Recorded: 647
* Flakes Failed: 0 (0%)
* Flakes Retried: 583 (90.108192%)

Example Flakes:

• https://github.com/getsentry/sentry/actions/runs/15785543753/job/44501035869
• https://github.com/getsentry/sentry/actions/runs/15785255109/job/44500166607
• https://github.com/getsentry/sentry/actions/runs/15785224553/job/44500079571
• https://github.com/getsentry/sentry/actions/runs/15785110905/job/44499732228
• https://github.com/getsentry/sentry/actions/runs/15784975654/job/44499306896

This flaky test needs to be addressed. Please choose one:

1. Fix the flakiness. Easier said than done, I know.
2. Delete the test, if its value is lower than its costs. Only the test
   owner can decide this.
3. Reassign this issue.
   • If there's a better owner for this task, please consider updating
     CODEOWNERS to help the system work better in future.
   • If this flakiness is caused by a flaw in the test process itself, then
     team-devinfra may be the best owner.

If this issue has no movement for two weeks, you may see a PR proposing to
delete this flaky test.

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See also:
Flaky Test Policy & Responsibilities