Add test for save script using `Save-PSResource` without `-IncludeXml`

[o-l-a-v]

PR Summary

Add test for #1609

Which probably broke when fixing #1335

PR Context

Add test "Save script without using -IncludeXML" for saving script using Save-PSResource without -IncludeXml.

Also fix typo and missing -IncludeXml in existing test "Save script using -IncludeXML".

PR Checklist

• [x] PR has a meaningful title
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• [x] Summarized changes
• [x] Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header
• [x] This PR is ready to merge and is not Work in Progress.
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• Breaking changes
  • [x] None
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  • [ ] [Documentation needed]()
    • [ ] Issue filed:
• User-facing changes
  • [x] Not Applicable
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  • [ ] [Documentation needed]()
    • [ ] Issue filed:
• Testing - New and feature
  • [ ] N/A or can only be tested interactively
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  • [x] Make sure you've added a new test if existing tests do not effectively test the code changed
• Tooling
  • [x] I have considered the user experience from a tooling perspective and don't believe tooling will be impacted.
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  • [ ] I have considered the user experience from a tooling perspective and enumerated concerns in the summary.

[o-l-a-v]

@microsoft-github-policy-service agree

[o-l-a-v]

@anamnavi : @SydneyhSmith told me to put tests into #1614 in https://github.com/PowerShell/PSResourceGet/pull/1614#issuecomment-2040349595. So close this PR and continue in mentioned PR?

[anamnavi]

@o-l-a-v ah yes, I missed that earlier. I'll close this PR. And add the comments from this to that PR.