fix: preserve GPUI lifetime and avoid WASAPI silence warnings

vendor/gpui/src/app.rs

@@ -980,6 +980,11 @@ impl App {
         self.platform.activate(ignoring_other_apps);
     }
 
+    /// Keep the native loop alive when the last window closes (for tray apps).
+    pub fn set_quit_on_last_window_close(&self, quit: bool) {
+        self.platform.set_quit_on_last_window_close(quit);
+    }
+
     /// Hide the application at the platform level.
     pub fn hide(&self) {
         self.platform.hide();