PR Summary

In the case where you interactively write to the console an advanced function that writes an error, that error doesn't get rendered. This is because in the ConciseView formatting, it doesn't correctly check if InvocationInfo.MyCommand.Name exists so it tries to find a command called $Null which fails.

Fix is to add check that InvocationInfo.MyCommand.Name exists.

PR Context

Fix #12727

PR Checklist

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• Breaking changes
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  • Experimental feature(s) needed
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• User-facing changes
  • Not Applicable
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  • Documentation needed
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• Testing - New and feature
  • N/A or can only be tested interactively
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    • Impact on PowerShell Editor Services which is used in the PowerShell extension for VSCode (which runs in a different PS Host).
    • Impact on Completions (both in the console and in editors) - one of PowerShell's most powerful features.
    • Impact on PSScriptAnalyzer (which provides linting & formatting in the editor extensions).
    • Impact on EditorSyntax (which provides syntax highlighting with in VSCode, GitHub, and many other editors).