In Odoo, when previewing a sales order in the customer view, the chatter typically displays both log notes and messages sent using the "Log Note" and "Send Message" buttons, respectively. I want to customize the view so that only the messages written and sent using the "Send Message" button are displayed in the customer preview. How can I achieve this? Please provide the necessary steps or code to filter and display only the "Send Message" entries in the sales order form view.