[IMP] base: improve notification of successful mail server connection

This commit improves the notification displayed when we configure
the mail server and click 'Test Connection' button. It removes the
title of the notification, improves the message string and changes
the notification type to 'success' instead of default 'warning'.

Task Id : 2321763
PR #56213

Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>

odoo/addons/base/models/ir_mail_server.py

@@ -153,14 +153,13 @@ class IrMailServer(models.Model):
                     # ignored, just a consequence of the previous exception
                     pass
 
-        title = _("Connection Test Succeeded!")
-        message = _("Everything seems properly set up!")
+        message = _("Connection Test Successful!")
         return {
             'type': 'ir.actions.client',
             'tag': 'display_notification',
             'params': {
-                'title': title,
                 'message': message,
+                'type': 'success',
                 'sticky': False,
             }
         }