[FIX] web: fix notification position

This commit fixes the position of the notification
manager which was wrongly placed in the dom and
caused the notifications to be behind dialog's backdrop.

closes odoo/odoo#127631

X-original-commit: 381d574974bcfe274291628889459148ad741812
Signed-off-by: Mathieu Duckerts-Antoine (dam) <dam@odoo.com>
Signed-off-by: Michaël Mattiello (mcm) <mcm@odoo.com>

addons/web/static/src/core/notifications/notification_service.js

@@ -29,10 +29,14 @@ export const notificationService = {
         let notifId = 0;
         const notifications = reactive({});
 
-        registry.category("main_components").add("NotificationContainer", {
-            Component: NotificationContainer,
-            props: { notifications },
-        });
+        registry.category("main_components").add(
+            "NotificationContainer",
+            {
+                Component: NotificationContainer,
+                props: { notifications },
+            },
+            { sequence: 100 }
+        );
 
         /**
          * @param {string} message