Fixes #10168 - Document behavior for AppExecLinks

[sdwheeler]

PR Summary

Document behavior for AppExecLinks

• Fixes AB#100143
• Fixes Clarify that AppX reparse points do not support listing their targets anymore in v7.2+ #10168

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 cffc35c:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/5.1/Microsoft.PowerShell.Core/About/about_FileSystem_Provider.md	✅Succeeded	View (powershell-5.1)
reference/5.1/Microsoft.PowerShell.Management/Get-ChildItem.md	✅Succeeded	View (powershell-5.1)
reference/7.2/Microsoft.PowerShell.Core/About/about_FileSystem_Provider.md	✅Succeeded	View (powershell-7.2)
reference/7.2/Microsoft.PowerShell.Management/Get-ChildItem.md	✅Succeeded	View (powershell-7.2)
reference/7.3/Microsoft.PowerShell.Core/About/about_FileSystem_Provider.md	✅Succeeded	View (powershell-7.3)
reference/7.3/Microsoft.PowerShell.Management/Get-ChildItem.md	✅Succeeded	View (powershell-7.3)
reference/7.4/Microsoft.PowerShell.Core/About/about_FileSystem_Provider.md	✅Succeeded	View (powershell-7.4)
reference/7.4/Microsoft.PowerShell.Management/Get-ChildItem.md	✅Succeeded	View (powershell-7.4)

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