[IMP] mail: rename device model

Rename javascript model `mail.device` to `Device` in order to
distinguish javascript models from python models.

Part of task-2701674.

closes odoo/odoo#81332

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

addons/mail/static/src/models/device/device.js

@@ -4,7 +4,7 @@ import { registerModel } from '@mail/model/model_core';
 import { attr } from '@mail/model/model_field';
 
 registerModel({
-    name: 'mail.device',
+    name: 'Device',
     identifyingFields: ['messaging'],
     lifecycleHooks: {
         _created() {

addons/mail/static/src/models/messaging/messaging.js

@@ -243,7 +243,7 @@ registerModel({
         currentGuest: one2one('Guest'),
         currentPartner: one2one('mail.partner'),
         currentUser: one2one('mail.user'),
-        device: one2one('mail.device', {
+        device: one2one('Device', {
             default: insertAndReplace(),
             isCausal: true,
             readonly: true,