Debugger should ship DebuggerDisplay strings for system types (autoexp.cs/dll)

## DebuggerDisplay attribute not used for dictionary key and value collection display ##
## Steps to Reproduce ##
Debug code with an object in a Dictionary that has a DebuggerDisplay attribute.
Display the values in the Dictionary in the Locals window, quick watch, or other debugger display
Here's some sample code that demonstrates the issue:

```cs
using System.Diagnostics;

class Program
{
static void Main(string[] args)
{
Dictionary map = new Dictionary();

map[1] = new Widget("Photo");
map[2] = new Widget("Hat");
map[3] = new Widget("Ocean");

foreach (var item in map.Values)
{
Console.WriteLine(item);
}

Debugger.Break();
}
}

[DebuggerDisplay("{_name}")]
public class Widget
{
private string _name;
public Widget(string name)
{
_name = name;
}

public override string ToString()
{
return $"A widget named {_name}";
}
}
```
## Expected Behavior ##
The debugger should be using the DebuggerDisplay attribute instead of the ToString() override, when both exist.

## Actual Behavior ##

The problem is that the ToString override is used to display the value: "A widget named Ocean" in the last value.

## Logs ##

### OmniSharp log ###
Post the output from Output-->OmniSharp log here

### C# log ###
Post the output from Output-->C# here

## Environment information ##

**VSCode version**: 1.69.2
**C# Extension**: 1.25.4

Mono Information
OmniSharp using mono: 6.12.0
Dotnet Information
.NET SDK:
Version: 7.0.200-preview.22628.1
Commit: 76bbaffad6

Runtime Environment:
OS Name: Mac OS X
OS Version: 13.2
OS Platform: Darwin
RID: osx.13-arm64
Base Path: /usr/local/share/dotnet/sdk/7.0.200-preview.22628.1/

Host:
Version: 7.0.1
Architecture: arm64
Commit: 97203d38ba

.NET SDKs installed:
6.0.404 [/usr/local/share/dotnet/sdk]
7.0.100 [/usr/local/share/dotnet/sdk]
7.0.101 [/usr/local/share/dotnet/sdk]
7.0.200-preview.22628.1 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.12 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.1 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.12 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
x64 [/usr/local/share/dotnet]
registered at [/etc/dotnet/install_location_x64]

Environment variables:
Not set

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download

Visual Studio Code Extensions

|Extension|Author|Version|
|---|---|---|
|copilot|GitHub|1.71.8269|
|csharp|ms-dotnettools|1.25.4|
|remote-containers|ms-vscode-remote|0.245.2|
|vim|vscodevim|1.24.3|
|vscode-docker|ms-azuretools|1.23.3|;

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