models(base): fix auto-delay wrapper binding to use unbound origin

Set origin to class function and bind at call time; resolves TypeError in auto-delay tests. No functional change outside patching helper.

Author: Milan Topuzov

queue_job/models/base.py

@@ -232,8 +232,9 @@ def auto_delay_wrapper(self, *args, **kwargs):
                 delayed = self.with_delay(**job_options)
                 return getattr(delayed, method_name)(*args, **kwargs)
 
-        origin = getattr(self, method_name)
-        return functools.update_wrapper(auto_delay_wrapper, origin)
+        origin_func = getattr(type(self), method_name)
+        auto_delay_wrapper.origin = origin_func
+        return functools.update_wrapper(auto_delay_wrapper, origin_func)
 
     @api.model
     def _job_store_values(self, job):