[EXOArcConfig] Issue with Identity parameter

[ykuijs]

Description of the issue

This resource has both the IsSingleInstance and Identity parameter added:

Microsoft365DSC/Modules/Microsoft365DSC/DSCResources/MSFT_EXOArcConfig/MSFT_EXOArcConfig.psm1

Lines 118 to 125 in ebf2e90

	[Parameter(Mandatory = $true)]
	[System.String]
	[ValidateSet('Yes')]
	$IsSingleInstance,
	[Parameter()]
	[System.String]
	$Identity,

This does not make much sense, especially since in the call to Set-ArcConfig, the Identity is hardcoded to Default:

Microsoft365DSC/Modules/Microsoft365DSC/DSCResources/MSFT_EXOArcConfig/MSFT_EXOArcConfig.psm1

Line 186 in ebf2e90

Set-ArcConfig -Identity Default @ArcConfigParams

When I run the unit tests locally, they fail on this specific line. But somehow the unit tests run fine when ran in GitHub Actions.

@namratagupta2024, since you created this resource: Could you please have a look at this issue?

Microsoft 365 DSC Version

Dev

Which workloads are affected

Exchange Online

The DSC configuration

N/A

Verbose logs showing the problem

[-] DSC Resource 'EXOArcConfig'.Configuration needs updating.Should call the Set method 73ms (71ms|2ms)
 ParameterBindingException: Cannot bind parameter because parameter 'Identity' is specified more than once. To provide multiple values to parameters that can accept multiple values, use the array syntax. For example, "-parameter value1,value2,value3".
 at Set-TargetResource, C:\src\Microsoft365DSC\Modules\Microsoft365DSC\DSCResources\MSFT_EXOArcConfig\MSFT_EXOArcConfig.psm1:186
 at <ScriptBlock>, C:\src\Microsoft365DSC\Tests\Unit\Microsoft365DSC\Microsoft365DSC.EXOArcConfig.Tests.ps1:72

Environment Information + PowerShell Version

PSv5.1