Fixed #20897 -- Added make_cursor() for consistent cursor creation

In django.db.backends.BaseDatabaseWrapper, pulled the creation of
cursors in the non-debug case into a separate method, in order to
make behavior more consistent when overriding the cursor creation
in derived classes.

django/db/backends/__init__.py

@@ -158,7 +158,7 @@ def cursor(self):
                 (self.use_debug_cursor is None and settings.DEBUG)):
             cursor = self.make_debug_cursor(self._cursor())
         else:
-            cursor = utils.CursorWrapper(self._cursor(), self)
+            cursor = self.make_cursor(self._cursor())
         return cursor
 
     def commit(self):
@@ -433,6 +433,12 @@ def make_debug_cursor(self, cursor):
         """
         return utils.CursorDebugWrapper(cursor, self)
 
+    def make_cursor(self, cursor):
+        """
+        Creates a cursor without debug logging.
+        """
+        return utils.CursorWrapper(cursor, self)
+
     @contextmanager
     def temporary_connection(self):
         """