[FIX] base: incorrect _on_login_cooldown return

_on_login_cooldown is documented as being disabled when
"base.login_cooldown_after" is set to 0, however the incorrect return
value meant setting this parameter to 0 would put every user on login
cooldown permanently.

Closes odoo/odoo#35544 reported by @rodrig92

closes odoo/odoo#35555

Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>

odoo/addons/base/models/res_users.py

@@ -834,7 +834,7 @@ class Users(models.Model):
         cfg = self.env['ir.config_parameter'].sudo()
         min_failures = int(cfg.get_param('base.login_cooldown_after', 5))
         if min_failures == 0:
-            return True
+            return False
 
         delay = int(cfg.get_param('base.login_cooldown_duration', 60))
         return failures >= min_failures and (datetime.datetime.now() - previous) < datetime.timedelta(seconds=delay)