`winget` hangs prompting for approval of source agreement terms in PowerShell 7.4.0-preview.6

Brief description of your issue

(follow-up to https://github.com/PowerShell/PowerShell/issues/20452)

When winget needs to prompt for approval of the source license terms, it hangs when run under PowerShell 7.4.0-preview.6 running on Windows 11 10.0.22621.2361.amd64fre.ni_release.220506-1250 within Windows Terminal Preview 1.19.2309.25002.

This works fine under PowerShell 7.3.7.

PS> winget list smartm
The `msstore` source requires that you view the following agreements before using.
Terms of Transaction: https://aka.ms/microsoft-store-terms-of-transaction
The source requires the current machine's 2-letter geographic region to be sent to the backend service to function properly (ex. "US").

Do you agree to all the source agreements terms?
[Y] Yes  [N] No:

Entering 'Y' at this point does nothing: winget cannot read keyboard input.

Steps to reproduce

Run this Update-WinGetSources.ps1 PowerShell script:

#requires -RunAsAdministrator

winget source reset --force
$msix = Join-Path -Path $env:TEMP -ChildPath 'source.msix'
Invoke-WebRequest https://cdn.winget.microsoft.com/cache/source.msix -OutFile $msix
Add-AppXPackage -Path $msix
Remove-Item -Path $msix
winget source update

Then invoke winget list smartm.

At the prompt, type Y

Expected behavior

PS> winget list smartm
The `msstore` source requires that you view the following agreements before using.
Terms of Transaction: https://aka.ms/microsoft-store-terms-of-transaction
The source requires the current machine's 2-letter geographic region to be sent to the backend service to function properly (ex. "US").

Do you agree to all the source agreements terms?
[Y] Yes  [N] No: Y

Actual behavior

PS> winget list smartm
The `msstore` source requires that you view the following agreements before using.
Terms of Transaction: https://aka.ms/microsoft-store-terms-of-transaction
The source requires the current machine's 2-letter geographic region to be sent to the backend service to function properly (ex. "US").

Do you agree to all the source agreements terms?
[Y] Yes  [N] No:

Keyboard input is ignored. The winget.exe process needs to be killed.

Environment

Windows Package Manager v1.6.2771
Copyright (c) Microsoft Corporation. All rights reserved.

Windows: Windows.Desktop v10.0.22621.2361
System Architecture: X64
Package: Microsoft.DesktopAppInstaller v1.21.2771.0

Winget Directories
-----------------------------------------------------------------------------------------------------------------------
Logs                               %LOCALAPPDATA%\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bbwe\LocalState\Diag…
User Settings                      %LOCALAPPDATA%\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bbwe\LocalState\sett…
Portable Links Directory (User)    %LOCALAPPDATA%\Microsoft\WinGet\Links
Portable Links Directory (Machine) C:\Program Files\WinGet\Links
Portable Package Root (User)       %LOCALAPPDATA%\Microsoft\WinGet\Packages
Portable Package Root              C:\Program Files\WinGet\Packages
Portable Package Root (x86)        C:\Program Files (x86)\WinGet\Packages
Installer Downloads                %USERPROFILE%\Downloads

Links
---------------------------------------------------------------------------
Privacy Statement   https://aka.ms/winget-privacy
License Agreement   https://aka.ms/winget-license
Third Party Notices https://aka.ms/winget-3rdPartyNotice
Homepage            https://aka.ms/winget
Windows Store Terms https://www.microsoft.com/en-us/storedocs/terms-of-sale

Admin Setting                             State
--------------------------------------------------
LocalManifestFiles                        Disabled
BypassCertificatePinningForMicrosoftStore Disabled
InstallerHashOverride                     Disabled
LocalArchiveMalwareScanOverride           Disabled

Start by reproducing winget list smartm after running Update-WinGetSources.ps1 under PowerShell 7.4.0-preview.6, then compare it with PowerShell 7.3.7 and the Windows Terminal environment described here. Trace why keyboard input is ignored at the source-agreement prompt; done means entering Y is accepted without killing winget.exe.