EventSource_ParallelRequests_LogsNewConnectionIdForEachRequest timeout on OSX

[antonfirsov]

This is a new test introduced in #88853, which timed out on the queues net8.0-osx-Debug-arm64-CoreCLR_Debug-OSX.1200.ARM64.Open and net8.0-osx-Debug-x64-CoreCLR_Debug-OSX.1200.Amd64.Open:

https://dev.azure.com/dnceng-public/public/_build/results?buildId=342148&view=ms.vss-test-web.build-test-results-tab&runId=7145234&resultId=104213&paneView=debug

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Issue Details

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This is a new test being introduced in #88853, which timed out on the queues net8.0-osx-Debug-arm64-CoreCLR_Debug-OSX.1200.ARM64.Open and net8.0-osx-Debug-x64-CoreCLR_Debug-OSX.1200.Amd64.Open:

https://dev.azure.com/dnceng-public/public/_build/results?buildId=342148&view=ms.vss-test-web.build-test-results-tab&runId=7145234&resultId=104213&paneView=debug

Author:	antonfirsov
Assignees:	-
Labels:	area-System.Net.Http, os-mac-os-x, test-run-core
Milestone:	8.0.0