[FIX] mail: only display errors linked to message of current user

fine-tuning commit 1120bffb66

Before this commit, the search on message_has_error (used when clicking
on a failure notification) only display errors linked to message of the
current user. Also, the filter Has_error is true, in the messages view
in technical menu only display the message with errors of current user.

Now, the filter Has_error is true display the message with errors of all
users. The search on message_has_error behave as before.

opw-1958813

closes odoo/odoo#32462

Signed-off-by: Jorge Pinna Puissant (jpp) <jpp@odoo.com>

addons/mail/models/mail_message.py

@@ -154,8 +154,8 @@ class Message(models.Model):
     @api.multi
     def _search_has_error(self, operator, operand):
         if operator == '=' and operand:
-            return ['&', ('notification_ids.email_status', 'in', ('bounce', 'exception')), ('author_id', '=', self.env.user.partner_id.id)]
-        return ['!', '&', ('notification_ids.email_status', 'in', ('bounce', 'exception')), ('author_id', '=', self.env.user.partner_id.id)]  # this wont work and will be equivalent to "not in" beacause of orm restrictions. Dont use "has_error = False"
+            return [('notification_ids.email_status', 'in', ('bounce', 'exception'))]
+        return ['!', ('notification_ids.email_status', 'in', ('bounce', 'exception'))]  # this wont work and will be equivalent to "not in" beacause of orm restrictions. Dont use "has_error = False"
 
     @api.depends('starred_partner_ids')
     def _get_starred(self):

addons/mail/models/mail_thread.py

@@ -237,7 +237,7 @@ class MailThread(models.AbstractModel):
 
     @api.model
     def _search_message_has_error(self, operator, operand):
-        return [('message_ids.has_error', operator, operand)]
+        return ['&', ('message_ids.has_error', operator, operand), ('message_ids.author_id', '=', self.env.user.partner_id.id)]
 
     @api.multi
     def _compute_message_attachment_count(self):