launchSettings.json ASPNETCORE_ENVIRONMENT should not be overridden by environment variable

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Describe the bug

If ASPNETCORE_ENVIRONMENT or DOTNET_ENVIRONMENT are set on the development machine as environment variables, they override the ASPNETCORE_ENVIRONMENT in launchSettings.json

> The environment for local machine development can be set in the Properties\launchSettings.json file of the project. Environment values set in launchSettings.json override values set in the system environment.

https://learn.microsoft.com/en-us/aspnet/core/fundamentals/environments?view=aspnetcore-8.0

### Expected Behavior

The setting in launchSettings.json should take priority.

### Steps To Reproduce

```c#
var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();
app.MapGet("/", () => builder.Environment.EnvironmentName);
app.Run();
```

```json
{
"$schema": "http://json.schemastore.org/launchsettings.json",
"profiles": {
"https": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": true,
"applicationUrl": "https://localhost:7034",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "I should see this text"
}
}
}
}
```

1. Run the app and see the correct value.
2. Set either `ASPNETCORE_ENVIRONMENT` or `DOTNET_ENVIRONMENT` on your machine's Environment variables
3. (Might need VS restart)
4. Run again and see the incorrect value

### Exceptions (if any)

_No response_

### .NET Version

8.0.200-preview.23624.5

### Anything else?

.NET SDK:
Version: 8.0.200-preview.23624.5
Commit: 8065b9770c
Workload version: 8.0.200-manifests.66f5ce51

Runtime Environment:
OS Name: Windows
OS Version: 10.0.22621
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.200-preview.23624.5\

.NET workloads installed:
Workload version: 8.0.200-manifests.66f5ce51
[maui-windows]
Installation Source: VS 17.8.34525.116, VS 17.9.34526.213
Manifest Version: 8.0.3/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.maui\8.0.3\WorkloadManifest.json
Install Type: Msi

[maccatalyst]
Installation Source: VS 17.8.34525.116, VS 17.9.34526.213
Manifest Version: 17.2.8004/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.maccatalyst\17.2.8004\WorkloadManifest.json
Install Type: Msi

[ios]
Installation Source: VS 17.8.34525.116, VS 17.9.34526.213
Manifest Version: 17.2.8004/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.ios\17.2.8004\WorkloadManifest.json
Install Type: Msi

[android]
Installation Source: VS 17.8.34525.116, VS 17.9.34526.213
Manifest Version: 34.0.52/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.android\34.0.52\WorkloadManifest.json
Install Type: Msi

[wasm-tools-net6]
Installation Source: VS 17.8.34525.116, VS 17.9.34526.213
Manifest Version: 8.0.1/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.workload.mono.toolchain.net6\8.0.1\WorkloadManifest.json
Install Type: Msi

[wasm-tools-net7]
Installation Source: VS 17.8.34525.116, VS 17.9.34526.213
Manifest Version: 8.0.1/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.workload.mono.toolchain.net7\8.0.1\WorkloadManifest.json
Install Type: Msi

[wasm-tools]
Installation Source: VS 17.8.34525.116, VS 17.9.34526.213
Manifest Version: 8.0.1/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.workload.mono.toolchain.current\8.0.1\WorkloadManifest.json
Install Type: Msi

[aspire]
Installation Source: VS 17.9.34526.213
Manifest Version: 8.0.0-preview.1.23557.2/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.aspire\8.0.0-preview.1.23557.2\WorkloadManifest.json
Install Type: Msi

Host:
Version: 8.0.1
Architecture: x64
Commit: bf5e279d92

.NET SDKs installed:
5.0.408 [C:\Program Files\dotnet\sdk]
7.0.203 [C:\Program Files\dotnet\sdk]
8.0.101 [C:\Program Files\dotnet\sdk]
8.0.200-preview.23624.5 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.All 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.25 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.26 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.0-rc.2.23480.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.25 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.26 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.0-rc.2.23479.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.25 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.26 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.0-rc.2.23479.10 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
Not set

global.json file:
Not found

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