title: Confirm user owns a social account without switching to a different logged user (django social auth)
body: <p>I'm using Django social auth to log users in using Facebook, Twitter, etc as described, for example <a href="https://simpleisbetterthancomplex.com/tutorial/2016/10/24/how-to-add-social-login-to-django.html" rel="nofollow noreferrer">here</a>.</p>
  
  <p>Scenario:
  A user is logged onto my platform using my native login system. I want them to validate that they own a particular Twitter account without redirecting them to a view where <code>request.user</code> is a new <code>UserSocialAuth</code> associated with their Twitter account. I want to show the user the Twitter login page but, after they provided their credentials, keep them logged in as they were rather than log them in as a different user.</p>