Only allow certain packages in source build

[zivkan]

Bug

Fixes: NuGet/Home#12604
Fixes: NuGet/Home#12603

Regression? yes Last working version: before #5164

Description

• Add '$(DotNetBuildFromSource)' != 'true' conditions on two packages
• Add target that runs after restore that validates package references in source build are on allow list, to hopefully prevent something like this happening again.

PR Checklist

• PR has a meaningful title

• PR has a linked issue.

• Described changes

• Tests

  • Automated tests added
  • OR
  • Test exception
  • OR
  • N/A

• Documentation

  • Documentation PR or issue filled
  • OR
  • N/A

[zivkan]

cc @NikolaMilosavljevic

[kartheekp-ms]

I think @NikolaMilosavljevic can close #5175 PR in favor of this one, correct?

[NikolaMilosavljevic]

I think @NikolaMilosavljevic can close #5175 PR in favor of this one, correct?

Yes - closing it now. Thank you!