[FIX] mail: new needaction message from chatter in messaging menu

Before this commit, when receiving a new needaction message from
chatter, the messaging was not updating itself to show this new
needaction.

closes odoo/odoo#119843

Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>

addons/mail/static/src/core/messaging_service.js

@@ -276,6 +276,11 @@ export class Messaging {
                         inbox.messages.push(message);
                         inbox.counter++;
                     }
+                    const thread = message.originThread;
+                    if (!thread.needactionMessages.includes(message)) {
+                        thread.needactionMessages.push(message);
+                        thread.message_needaction_counter++;
+                    }
                     break;
                 }
                 case "mail.message/delete": {

addons/mail/static/src/web/messaging_menu/notification_item.js

@@ -13,7 +13,7 @@ export class NotificationItem extends Component {
         "datetime?",
         "displayName",
         "hasMarkAsReadButton?",
-        "iconSrc",
+        "iconSrc?",
         "isLast",
         "onClick",
         "onSwipeLeft?",

addons/mail/static/tests/messaging_menu/messaging_menu_tests.js

@@ -944,3 +944,24 @@ QUnit.test("failure notifications are shown before channel preview", async (asse
         ".o-mail-NotificationItem:contains(An error occurred when sending an email) ~ .o-mail-NotificationItem:contains(message)"
     );
 });
+
+QUnit.test("messaging menu should show new needaction messages from chatter", async (assert) => {
+    const pyEnv = await startServer();
+    const partnerId = pyEnv["res.partner"].create({ name: "Frodo Baggins" });
+    await start();
+    await click(".o_menu_systray i[aria-label='Messages']");
+    assert.containsNone($, ".o-mail-NotificationItem:contains(@Mitchell Admin)");
+
+    // simulate receiving a new needaction message
+    await afterNextRender(() => {
+        pyEnv["bus.bus"]._sendone(pyEnv.currentPartner, "mail.message/inbox", {
+            body: "@Mitchell Admin",
+            id: 100,
+            needaction_partner_ids: [pyEnv.currentPartnerId],
+            model: "res.partner",
+            res_id: partnerId,
+            record_name: "Frodo Baggins",
+        });
+    });
+    assert.containsOnce($, ".o-mail-NotificationItem:contains(@Mitchell Admin)");
+});