feat(notification): play default sound on WIndows

Ref https://github.com/tauri-apps/tauri/pull/6680

.changes/notification-sound.md

@@ -0,0 +1,5 @@
+---
+"notification": patch
+---
+
+Play a default sound when showing a notification on Windows.

plugins/notification/src/desktop.rs

@@ -184,6 +184,9 @@ mod imp {
                 {
                     notification.app_id(&self.identifier);
                 }
+
+                // will be parsed as a `::winrt_notification::Sound`
+                notification.sound_name("Default");
             }
             #[cfg(target_os = "macos")]
             {