docs: Mention PS 5.1 bug where Get-ChildItem ignores -Depth parameter when used with -Include

[deadlydog]

PR Summary

There is a bug in Windows PowerShell 5.1 with the Get-ChildItem cmdlet where it ignores the -Depth parameter when it is used with the -Include parameter. There is a GitHub repo to easily reproduce this issue here.

This change adds a note to the documentation to make the unexpected behaviour more well-known.

PR Checklist

• Descriptive Title: This PR's title is a synopsis of the changes it proposes.
• Summary: This PR's summary describes the scope and intent of the change.
• Contributor's Guide: I have read the contributors guide.
• Style: This PR adheres to the style guide.

[learn-build-service-prod]

Learn Build status updates of commit 9d7f882:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/5.1/Microsoft.PowerShell.Management/Get-ChildItem.md	✅Succeeded	View (powershell-5.1)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[github-actions]

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[learn-build-service-prod]

Learn Build status updates of commit d073584:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/5.1/Microsoft.PowerShell.Management/Get-ChildItem.md	✅Succeeded	View (powershell-5.1)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[sdwheeler]

@deadlydog Thanks for the updates.