ThreadingDiagnoserTests failed randomly when using InProcessToolchain

[filzrev]

After PR #3090 is merged.
CompletedWorkItemCountIsAccurate test is randomly failed.

Currently, this error is observed on macos(arm64) only.

Error message

CompletedWorkItemCountIsAccurate(toolchain: InProcessEmitToolchain) [FAIL]
       Assert.Equal() Failure: Values are not within 2 decimal places
       Expected: 1 (rounded from 1)
       Actual:   1.02 (rounded from 1.015625)

Logs

• https://github.com/dotnet/BenchmarkDotNet/actions/runs/24639422508/job/72040644748
• https://github.com/dotnet/BenchmarkDotNet/actions/runs/24885975618/job/72865987114

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It can be resolved by reduce precision when comparing metrics value.

BenchmarkDotNet/tests/BenchmarkDotNet.IntegrationTests/ThreadingDiagnoserTests.cs

Line 182 in d11792c

Assert.Equal(assertion.Value.expectedValue, metric.Value.Value, precision: 2);

.

Though, it need to determine root cause of this problems.