[1.5.X] Added some test guards for some recently added auth tests.

Refs #19061, #19057.

django/contrib/auth/tests/handlers.py

@@ -17,6 +17,7 @@ class ModWsgiHandlerTestCase(TransactionTestCase):
         group = Group.objects.create(name='test_group')
         user1.groups.add(group)
 
+    @skipIfCustomUser
     def test_check_password(self):
         """
         Verify that check_password returns the correct values as per

django/contrib/auth/tests/models.py

@@ -100,11 +100,13 @@ class UserManagerTestCase(TestCase):
                                  'The given username must be set',
                                   User.objects.create_user, username='')
 
+
 class IsActiveTestCase(TestCase):
     """
     Tests the behavior of the guaranteed is_active attribute
     """
 
+    @skipIfCustomUser
     def test_builtin_user_isactive(self):
         user = User.objects.create(username='foo', email='foo@bar.com')
         # is_active is true by default