Fix error-reporting in some WinCompat scenarios

[anmenaga]

PR Summary

This PR is basically a refactoring/optimization of certain WinCompat scenarios that replaces PowerShell.Create().AddCommand(ImportModuleCommand).Invoke() with a direct call to the target code that does WinCompat-loading of the module.

• this fixes error-reporting in some WinCompat scenarios like issue Windows Server Best Practices module does load properly in PowerShell 7 P6 #11202
• this makes WinCompat respect error/warning settings of CommandDiscovery/ModuleAutoload scenarios which improves user experience like in issue CertificateProvider auto-imports PKI module many times #11241
• this slightly improves performance because we replace a PowerShell.Create().Invoke() with a simple function call.

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[ghost]

🎉v7.0.0-rc.1 has been released which incorporates this pull request.:tada:

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