Flaky test RabbitMqTests.SubmitTraces

[pellared]

When running nuke Workflow on macOS 15 with x64 I get very frequent failures from IntegrationTests.RabbitMqTests.SubmitsTraces.

17:31:46 [DBG] [xUnit.net 00:16:38.54] IntegrationTests: --- FAIL: IntegrationTests.RabbitMqTests.SubmitsTraces(6.0.0) (68,17s)
17:31:46 [DBG] [xUnit.net 00:16:38.54] IntegrationTests: === RUN   IntegrationTests.RabbitMqTests.SubmitsTraces(7.0.0)
17:31:46 [DBG]   Niepowodzenie IntegrationTests.RabbitMqTests.SubmitsTraces(packageVersion: "6.0.0") [1 m 8 s]
17:31:46 [DBG]   Komunikat o błędzie:
17:31:46 [DBG]
17:31:46 [DBG] Missing expectations:
17:31:46 [DBG]   - "<no description> Instrumentation Scope Name: 'OpenTelemetry.AutoInstrumentation.RabbitMq', predicate is null: 'False'"

Originally posted by @pellared in #4000 (comment)

The test application can exit before the span is stopped and exported.