Make user account and organization deletion grace periods consistent

[geoffg-sentry]

User account and organization grace periods vary by 29 days. One day grace periods for org deletion have been challenging for support and investigation needs and a 30 days user activation is exceptionally long.

Currently reviewing all documentation locations that need to be updated in tandem.

[github-actions]

🚨 Warning: This pull request contains Frontend and Backend changes!

It's discouraged to make changes to Sentry's Frontend and Backend in a single pull request. The Frontend and Backend are not atomically deployed. If the changes are interdependent of each other, they must be separated into two pull requests and be made forward or backwards compatible, such that the Backend or Frontend can be safely deployed independently.

Have questions? Please ask in the #discuss-dev-infra channel.

[github-actions]

Backend Test Failures

Failures on ec07500 in this run:

tests/sentry/users/api/endpoints/test_user_details_analytics.py::UserDetailsDeleteAnalyticsTest::test_soft_delete_timestamps_differ_by_30_days — log

tests/sentry/users/api/endpoints/test_user_details_analytics.py:120: in test_soft_delete_timestamps_differ_by_30_days
    assert delta >= timedelta(days=29, hours=23, minutes=59)
E   assert datetime.timedelta(days=14) >= datetime.timedelta(days=29, seconds=86340)
E    +  where datetime.timedelta(days=29, seconds=86340) = timedelta(days=29, hours=23, minutes=59)

tests/sentry/users/api/endpoints/test_user_details_analytics.py::UserDetailsDeleteAnalyticsTest::test_soft_delete_records_analytics_and_security — log

tests/sentry/users/api/endpoints/test_user_details_analytics.py:49: in test_soft_delete_records_analytics_and_security
    assert deletion_scheduled >= deletion_request + timedelta(days=29)
E   assert datetime.datetime(2026, 3, 17, 21, 41, 25, 284579, tzinfo=datetime.timezone.utc) >= (datetime.datetime(2026, 3, 3, 21, 41, 25, 284579, tzinfo=datetime.timezone.utc) + datetime.timedelta(days=29))
E    +  where datetime.timedelta(days=29) = timedelta(days=29)