Microsoft.ML.Fairlearn.Tests.GridSearchTest.TestGridSearchTrialRunner2 failed with bestResult.Metric comparison

## Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=420917
Build error leg or test failing: Microsoft.ML.Fairlearn.Tests.GridSearchTest.TestGridSearchTrialRunner2
Pull request: N/A

## Error Message

```
Expected bestResult.Metric to be greater or equal to 0.4, but found 0.375.

Stack trace
at FluentAssertions.Execution.XUnit2TestFramework.Throw(String message) in C:\projects\fluentassertions-vf06b\Src\FluentAssertions\Execution\XUnit2TestFramework.cs:line 32
at FluentAssertions.Execution.TestFrameworkProvider.Throw(String message) in C:\projects\fluentassertions-vf06b\Src\FluentAssertions\Execution\TestFrameworkProvider.cs:line 40
at FluentAssertions.Execution.DefaultAssertionStrategy.HandleFailure(String message) in C:\projects\fluentassertions-vf06b\Src\FluentAssertions\Execution\DefaultAssertionStrategy.cs:line 29
at FluentAssertions.Execution.AssertionScope.FailWith(Func`1 failReasonFunc) in C:\projects\fluentassertions-vf06b\Src\FluentAssertions\Execution\AssertionScope.cs:line 223
at FluentAssertions.Execution.AssertionScope.FailWith(Func`1 failReasonFunc) in C:\projects\fluentassertions-vf06b\Src\FluentAssertions\Execution\AssertionScope.cs:line 196
at FluentAssertions.Execution.AssertionScope.FailWith(String message, Object[] args) in C:\projects\fluentassertions-vf06b\Src\FluentAssertions\Execution\AssertionScope.cs:line 238
at FluentAssertions.Numeric.NumericAssertions`1.BeGreaterOrEqualTo(T expected, String because, Object[] becauseArgs) in C:\projects\fluentassertions-vf06b\Src\FluentAssertions\Numeric\NumericAssertions.cs:line 236
at Microsoft.ML.Fairlearn.Tests.GridSearchTest.TestGridSearchTrialRunner2() in D:\a\_work\1\s\test\Microsoft.ML.Fairlearn.Tests\GridSearchTest.cs:line 106
```

Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssues.md#how-to-fill-out-a-known-issue-error-section).

```json
{
"ErrorMessage": "Expected bestResult.Metric to be greater or equal to 0.4, but found",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": true
}
```

### Known issue validation
**Build: :mag_right:** https://dev.azure.com/dnceng-public/public/_build/results?buildId=420917
**Error message validated:** `Expected bestResult.Metric to be greater or equal to 0.4, but found`
**Result validation: :white_check_mark:** Known issue matched with the provided build.
**Validation performed at:** 9/27/2023 8:26:51 PM UTC

### Report
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|0|0|0|