[Flaky CI]: three failing spans tests

### Flakiness Type

Timeout

### Name of Job

backend (6)

### Name of Test

OrganizationEventsTraceEndpointTestUsingSpans

### Link to Test Run

https://github.com/getsentry/sentry/actions/runs/12990892124/job/36227168523

### Details

```
_ OrganizationEventsTraceEndpointTestUsingSpans.test_split_by_char_optimization _
tests/snuba/api/endpoints/test_organization_events_trace.py:1628: in test_split_by_char_optimization
self.assert_trace_data(trace_transaction)
tests/snuba/api/endpoints/test_organization_events_trace.py:668: in assert_trace_data
self.assert_performance_issues(root)
tests/snuba/api/endpoints/test_organization_events_trace.py:1427: in assert_performance_issues
assert len(root["performance_issues"]) == 2
E assert 0 == 2
E + where 0 = len([])
_ OrganizationEventsTraceEndpointTestUsingSpans.test_timestamp_optimization_without_mock _
tests/snuba/api/endpoints/test_organization_events_trace.py:1584: in test_timestamp_optimization_without_mock
self.assert_trace_data(trace_transaction)
tests/snuba/api/endpoints/test_organization_events_trace.py:668: in assert_trace_data
self.assert_performance_issues(root)
tests/snuba/api/endpoints/test_organization_events_trace.py:1427: in assert_performance_issues
assert len(root["performance_issues"]) == 2
E assert 0 == 2
E + where 0 = len([])
_______ OrganizationEventsTraceEndpointTestUsingSpans.test_with_default ________
tests/snuba/api/endpoints/test_organization_events_trace.py:1330: in test_with_default
self.assert_trace_data(response.data["transactions"][0])
tests/snuba/api/endpoints/test_organization_events_trace.py:668: in assert_trace_data
self.assert_performance_issues(root)
tests/snuba/api/endpoints/test_organization_events_trace.py:1427: in assert_performance_issues
assert len(root["performance_issues"]) == 2
E assert 0 == 2
E + where 0 = len([])
```