Add missing dependencies that previously broke existing ADO authentication and are also needed for Symweb.
Increase timeout for downloads.
Tell HttpClient.GetAsync to return immediately after the response headers have been downloaded. This allows SymbolReader to show download progress and not timeout for larger symbol files.
HttpClient.GetAsyncto return immediately after the response headers have been downloaded. This allowsSymbolReaderto show download progress and not timeout for larger symbol files.