Name expansion hangs on complex objects like CommandInfo

[fflaten]

Checklist

• Issue has a meaningful title
• I have searched the existing issues. See all issues
• I have tested using the latest version of Pester. See Installation and update guide.

What is the issue?

Name expansion in Pester v6 "hangs" when referencing complex objects with many properties like CommandInfo.

Cause: Getting stuck in recursion with Format-Nicely2-> Format-Object2 -> Format-Nicely2 .. looping properties.

Expected Behavior

Not hang.

Steps To Reproduce

Describe 'Infinite format loop?' {
    BeforeAll {
        $func = Get-Command -Name 'Invoke-Pester'
    }

    it '<func.name> is cool' {
        $func.Name | Should -Be 'Invoke-Pester'
    }

    it '<func> will hang' {
        $func.Name | Should -Be 'Invoke-Pester'
    }
}

Or just & (Get-Module Pester) { Format-Nicely2 (Get-Command Invoke-Pester) }

Describe your environment

# Began in Pester 6.0.0

Pester version     : 6.1.0-alpha2 /workspaces/Pester/bin/Pester.psm1                                                    
PowerShell version : 7.4.16
OS version         : Unix 6.18.35.2

Possible Solution?

Guidance: Test authors should reference the string-property, like <mycommandinfo.name>

Technical: We should have some guardrails to avoid errors. Restrict Format-NicelyForTemplate to 0 or 1 level of recursion. Anything else gets messy.

We could also special case CommandInfo to [string] cast like v5, but do we want to? Without deep format, v6 will return [Management.Automation.FunctionInfo] in this scenario. That would help authors identify a bad practice and fix it.