Infinite loop when closing PowerShell process while being attached by the Visual Studio Code debugger

Prerequisites

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Exception report

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An error occurred while running the REPL loop:
System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.PowerShell.PSConsoleReadLine.ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics, CancellationToken cancellationToken, Nullable`1 lastRunStatus)   
   at Microsoft.PowerShell.EditorServices.Services.PowerShell.Console.PsrlReadLine.InvokePSReadLine(CancellationToken cancellationToken) in D:\a\_work\1\s\src\PowerShellEditorServices\Services\PowerShell\Console\PsrlReadLine.cs:line 48
   at Microsoft.PowerShell.EditorServices.Services.PowerShell.Execution.SynchronousTask`1.ExecuteSynchronously(CancellationToken executorCancellationToken) in D:\a\_work\1\s\src\PowerShellEditorServices\Services\PowerShell\Execution\SynchronousTask.cs:line 92
--- End of stack trace from previous location ---
   at Microsoft.PowerShell.EditorServices.Services.PowerShell.Host.PsesInternalHost.InvokeReadLine(CancellationToken cancellationToken) in D:\a\_work\1\s\src\PowerShellEditorServices\Services\PowerShell\Host\PsesInternalHost.cs:line 1248
   at Microsoft.PowerShell.EditorServices.Services.PowerShell.Host.PsesInternalHost.DoOneRepl(CancellationToken cancellationToken) in D:\a\_work\1\s\src\PowerShellEditorServices\Services\PowerShell\Host\PsesInternalHost.cs:line 1149

Screenshot

N/A

Environment data

PS Version: 7.4.0
PS HostName: ConsoleHost (Windows Terminal)
PSReadLine Version: 2.3.4
PSReadLine EditMode: Windows
OS: 10.0.22621.1 (WinBuild.160101.0800)
BufferWidth: 120
BufferHeight: 30

Steps to reproduce

1. Install PowerShell extension in Visual Studio Code (version v2024.0.0)
2. Prepare the launch.json with the following content:

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "PowerShell Attach to Host Process",
            "type": "PowerShell",
            "request": "attach"
        }
    ]
}

3. Start a new instance of the PowerShell
4. Attach to it using the Visual Studio Code
5. Wait till the debugger attaches to the process
6. Close the PowerShell

Expected behavior

No exception

Actual behavior

When the PowerShell process being currently attached by the Visual Studio debugger is closed, the infinite exception loop occurs.

Start by reproducing the failure with the attached launch.json configuration: attach the Visual Studio Code PowerShell debugger, then close the PowerShell process. Read the reported PsrlReadLine.cs, SynchronousTask.cs, and PsesInternalHost.cs stack-trace locations to trace shutdown handling. Done means closing the attached process produces neither an exception nor an infinite loop.