Optimize dandiset owner PUT endpoint

Now that django-allauth uses a regular JSONField for
`SocialAccount.extra_data`, we can optimize the dandisets owner query.

dandiapi/api/views/dandiset.py

@@ -362,7 +362,7 @@ def unembargo(self, request, dandiset__pk):
     # TODO: move these into a viewset
     @action(methods=['GET', 'PUT'], detail=True)
     def users(self, request, dandiset__pk):
-        dandiset = self.get_object()
+        dandiset: Dandiset = self.get_object()
         if request.method == 'PUT':
             # Verify that the user is currently an owner
             response = get_40x_or_None(request, ['owner'], dandiset, return_403=True)
@@ -373,14 +373,15 @@ def users(self, request, dandiset__pk):
             serializer.is_valid(raise_exception=True)
 
             def get_user_or_400(username):
-                # SocialAccount uses the generic JSONField instead of the PostGres JSONFIELD,
-                # so it is not empowered to do a more powerful query like:
-                # SocialAccount.objects.get(extra_data__login=username)
-                # We resort to doing this awkward search instead.
-                for social_account in SocialAccount.objects.filter(extra_data__icontains=username):
-                    if social_account.extra_data['login'] == username:
-                        return social_account.user
-                else:
+                try:
+                    return User.objects.alias(
+                        social_account_username=Subquery(
+                            SocialAccount.objects.filter(user_id=OuterRef('id')).values(
+                                'extra_data__login'
+                            )[:1]
+                        )
+                    ).get(social_account_username=username)
+                except ObjectDoesNotExist:
                     try:
                         return User.objects.get(username=username)
                     except ObjectDoesNotExist:

setup.py

@@ -42,7 +42,9 @@
         'dandischema~=0.8.4',
         'django~=4.1.0',
         'django-admin-display',
-        'django-allauth',
+        # Require 0.58.0 as it is the first version to support postgres' native
+        # JSONField for SocialAccount.extra_data
+        'django-allauth>=0.58.0',
         'django-click',
         'django-configurations[database,email]',
         'django-extensions',