VSSDK.BuildTools 17.0 preview 4 breaks package dependencies

[pharring]

I upgraded my project to reference the 17.0 preview 4 build tools and my VSIX no longer contains package references from nuget.
Preview 3 was fine. Preview 4 is broken.

Repro:

1. Create a new VSIX package project in VS 2022 preview
2. Manage the Nuget references and set the version of Microsoft.VSSDK.BuildTools to 17.0.3177-preview3
3. Also add a Nuget reference to Microsoft.ApplicationInsights 2.18.0
4. Build the VSIX
5. Rename the VSIX to .ZIP and examine the contents of the ZIP in Windows Explorer.
   

Notice the presence of Microsoft.ApplicationInsights.dll

5. Now upgrade the Microsoft.VSSDK.BuildTools reference to 17.0.4207-preview4
6. Rebuild the VSIX
7. Rename the VSIX to .ZIP and examine the contents:
   

Notice that the dependent assemblies (Microsoft.ApplicationInsights.dll, System.Buffers, System.Memory, etc.) are missing.

This breaks extension loading due to the missing files.

[pharring]

Also reported at https://developercommunity.visualstudio.com/t/1541661

[tinaschrepfer]

Just to close on this, we have a fix ready for this pending. Please refer to the feedback ticket to see status updates.