[FIX] project: make copy overridable in v8 api

Without the proper decorator, the method is matched as `cr_ui_context`.
This is because the `guess` mechanism expects a name `res_id` instead of
`record_id`.
For stability reason it is better to add the decorator than modify the signature
of the method.
Closes #11735

addons/project/res_partner.py

@@ -18,7 +18,7 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
-
+from openerp import api
 from openerp.osv import fields,osv
 
 class res_partner(osv.osv):
@@ -36,6 +36,7 @@ class res_partner(osv.osv):
         'task_count': fields.function(_task_count, string='# Tasks', type='integer'),
     }
 
+    @api.cr_uid_id_context
     def copy(self, cr, uid, record_id, default=None, context=None):
         if default is None:
             default = {}