[Enhancement] GR2 validation 9 Privileged Guest user accounts

[dutt0]

Overview/Summary

This PR creates a new control in alignment with the v2.0 guardrail policy for GR2 privileged guest user check

This PR fixes/adds/changes/removes

• This PR includes default pass for all privileged guest user
• This new control lists all guest user accounts (privileged or non-privileged) with role assignments, privileged role assignments and related comments for departments to verify their necessity overtime.
• This PR removes the guest account table output from GR2 validation 8 control

Breaking Changes

N/A

Testing Evidence

Tested with a clean install in Test environment

As part of this Pull Request I have

• Checked for duplicate Pull Requests
• Associated it with relevant GitHub Issues
• Ensured my code/branch is up-to-date with the latest changes in the main branch
• Performed testing and provided evidence.
• Updated relevant and associated documentation.
• Ensure PowerShell module versions have been updated (manually or with the ./tools/Update-ModuleVersions.ps1 script)