[BUG] Duplicate package versions are displayed in NuGet add or update package workflow

[kartheekp-ms]

Describe the Issue

I created a simple C# class library application and the NuGet.Config file have the following 2 packages sources.

1. https://api.nuget.org/v3/index.json
1. https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json

I tried to add NuGet.Common package to the project and noticed duplicate versions displayed in the options as shown below.

Same issue for update package workflow:

Steps To Reproduce

No response

Expected Behavior

When a same package is present in multiple feeds then the C# extension should not display duplicate package versions in the options.

Environment Information

Identifier: ms-dotnettools.csdevkit
Version: 1.14.18
Last Updated : 2024-12-03, 16:45:18