[FIX] l10n_cl: do not override `_onchange_journal``

This method was defined in `account` but overrided in `l10n_cl`. Prefix
the method to avoid that.

X-original-commit: c60530eedc70f7bb6040adaf311a273bad5aa37c

addons/l10n_cl/models/account_move.py

@@ -91,7 +91,7 @@ class AccountMove(models.Model):
                                             'the country should be different from Chile to register purchases.'))
 
     @api.onchange('journal_id')
-    def _onchange_journal(self):
+    def _l10n_cl_onchange_journal(self):
         self.l10n_latam_document_type_id = False
 
     def _post(self, soft=True):