Stop using HttpClientHandler.PreAuthenticate

[zivkan]

Bug

Fixes: NuGet/Home#12961

Regression? Yes Last working version: 6.6

Description

The .NET runtime has a bug when using HttpClientHandler.PreAuthenticate that prevents it from getting new credentials when a time-limited credential expires, and the server starts requiring a new credential. NuGet's credential provider can provide the new credential, but HttpClient won't use it as long as PreAuthenticate is true.

• HttpClientHandler with PreAuthenticate enabled can't refresh expired password dotnet/runtime#93340

PR Checklist

• PR has a meaningful title

• PR has a linked issue.

• Described changes

• Tests

  • Automated tests added
  • OR
  • Test exception: We didn't have a test for the previous behaviour. Since we should re-introduce the functionality, I skipped the existing PreAuthenticate test, rather than deleting it, so it's easy to reactive once we have a new solution.
  • OR
  • N/A

• Documentation

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

[jeffkl]

😢