No need to clear lines when it's not a menu completion rendering

[daxian-dbw]

PR Summary

Fix #3196
No need to clear lines when it's not a menu completion rendering.

The fix is simply moving the code that handles line cleanup for menu movement to the if (menuSelect) block.
It's much easier to review when ignoring white space changes: https://github.com/PowerShell/PSReadLine/pull/3199/files?w=1

PR Checklist

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• Summarized changes
• Make sure you've added one or more new tests
• Make sure you've tested these changes in terminals that PowerShell is commonly used in (i.e. conhost.exe, Windows Terminal, Visual Studio Code Integrated Terminal, etc.)
• User-facing changes
  • Not Applicable
  • OR
  • Documentation needed at PowerShell-Docs
    • Doc Issue filed:

Microsoft Reviewers: Open in CodeFlow

[ghost]

🎉 v2.2.2 has been released which incorporates this pull request. 🎉