Enhance Remove-Item to work with OneDrive (Third)

[iSazonov]

PR Summary

Fix#15466

Continue #15260

EnsureExtendedPrefix is copy-pasted from .Net Runtime repository.

PR Context

PR Checklist

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
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• Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header
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• Breaking changes
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  • OR
  • Experimental feature(s) needed
    • Experimental feature name(s):
• User-facing changes
  • Not Applicable
  • OR
  • Documentation needed
    • Issue filed:
• Testing - New and feature
  • N/A or can only be tested interactively
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  • Make sure you've added a new test if existing tests do not effectively test the code changed
• Tooling
  • 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 opened an issue in the relevant tool repository. This may include:
    • Impact on PowerShell Editor Services which is used in the PowerShell extension for VSCode
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    • Impact on Completions (both in the console and in editors) - one of PowerShell's most powerful features.
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    • Impact on PSScriptAnalyzer (which provides linting & formatting in the editor extensions).
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    • Impact on EditorSyntax (which provides syntax highlighting with in VSCode, GitHub, and many other editors).
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[iSazonov]

@rjmholt Friendly ping :-)

[ghost]

This pull request has been automatically marked as Review Needed because it has been there has not been any activity for 7 days.
Maintainer, please provide feedback and/or mark it as Waiting on Author

[rjmholt]

@iSazonov please add comments around code that's been copy/pasted from .NET about where it's come from

[iSazonov]

@iSazonov please add comments around code that's been copy/pasted from .NET about where it's come from

There is already #region Helpers for long paths from .Net Runtime.

[ghost]

This pull request has been automatically marked as Review Needed because it has been there has not been any activity for 7 days.
Maintainer, please provide feedback and/or mark it as Waiting on Author

[rjmholt]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 6 pipeline(s).

[rjmholt]

@PoshChan please remind me in 1 hour

[PoshChan]

@rjmholt, this is the reminder you requested 1 hour ago

[ghost]

🎉v7.2.0-preview.9 has been released which incorporates this pull request.:tada:

Handy links:

• Release Notes

[ghost]

🎉v7.2.0-preview.10 has been released which incorporates this pull request.:tada:

Handy links:

• Release Notes