Update-MgIdentityConditionalAccessPolicy "1054: Invalid servicePrincipal value: ."

Describe the bug
When I try to remove all existing service principal IDs in selected conditional policy condition by defining IncludeServicePrincipals = '', it ends with an error.

I've tried to use:
IncludeServicePrincipals = $null
IncludeServicePrincipals = @()

but both tries ended with empty body a.k.a. nothing happened.

How am I suppose to select NONE then?

To Reproduce
Steps to reproduce the behavior:
$params = @{
Conditions = @{
ClientApplications = @{
IncludeServicePrincipals = ''
}
}
}

Update-MgIdentityConditionalAccessPolicy -ConditionalAccessPolicyId -Conditions $params.Conditions -debug

Expected behavior
Existing service principals defined in such conditional policy should be remove.

Debug Output

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Module Version

Please run Get-Module Microsoft.Graph* after cmdlet execution and paste the output below.
If a module cannot be installed or imported, please run Get-Module -ListAvailable and paste the output.

Environment Data

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Additional context

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