[FIX] base: set related crud_model_name on the correct field

Create an automated action that creates a new record (of target crud_model_id).
Try using a link_field_id: nothing appears to be selectable, even if some fields
satisfy the intended conditions.
The issue is that the crud_model_name field was related to crud_model_id.name,
instead of the correct crud_model_id.model (note the apt naming).
Note that in the onchange the value of crud_model_name was correctly set to
crud_model_id.model, adding to the confusion.

opw 1910671

closes odoo/odoo#30145

odoo/addons/base/ir/ir_actions.py

@@ -383,7 +383,7 @@ class IrActionsServer(models.Model):
     # Create
     crud_model_id = fields.Many2one('ir.model', string='Create/Write Target Model',
                                     oldname='srcmodel_id', help="Model for record creation / update. Set this field only to specify a different model than the base model.")
-    crud_model_name = fields.Char(related='crud_model_id.name', readonly=True)
+    crud_model_name = fields.Char(related='crud_model_id.model', readonly=True)
     link_field_id = fields.Many2one('ir.model.fields', string='Link using field',
                                     help="Provide the field used to link the newly created record "
                                          "on the record on used by the server action.")