fix(notification): remove default notification sound on Windows

reverts 7d71ad4e58

.changes/notification-revert-sound.md

@@ -0,0 +1,5 @@
+---
+"notification": patch
+---
+
+Revert [7d71ad4e5](https://github.com/tauri-apps/plugins-workspace/commit/7d71ad4e587bcf47ea34645f5b226945e487b765) which added a default sound for notifications on Windows. This introduced inconsistency with other platforms that has silent notifications by default. In the upcoming releases, we will add support for modifying the notification sound across all platforms.

plugins/notification/src/desktop.rs

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