logiguard fork: add Window::activate_with_token for externally-minted xdg-activation tokens

Mutter honors xdg_activation_v1.activate() only when the token carries a
valid grab serial on the surface being activated. activate_window() mints
its own token using this client's KeyboardEnter serial, which is stale
after a tray-menu click (the tray popup held focus, not the app window).

Add Window::activate_with_token(&str) so callers can feed in a token
minted by GTK (via g_app_launch_context_get_startup_notify_id) on the
connection that actually received the user gesture. That token carries
the real grab serial + focused surface, which Mutter accepts.

- crates/gpui/src/platform.rs: PlatformWindow::activate_with_token with
  default impl that falls back to activate().
- crates/gpui/src/window.rs: public Window::activate_with_token.
- crates/gpui_linux/src/linux/wayland/window.rs: WaylandWindow impl that
  issues xdg_activation_v1.activate(token, surface) directly.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

crates/gpui_linux/src/linux/wayland/window.rs

@@ -1263,6 +1263,22 @@ impl PlatformWindow for WaylandWindow {
         }
     }
 
+    fn activate_with_token(&self, token: &str) {
+        // Activate using a token minted externally (e.g. by GTK on the
+        // connection that received the tray-click gesture). We pass it straight
+        // to `xdg_activation_v1.activate(token, surface)` — Mutter honors it
+        // because the token carries a valid grab serial + the focused surface,
+        // unlike `activate()` above which may use a stale serial.
+        let state = self.borrow();
+        if let Some(activation) = &state.globals.activation {
+            activation.activate(token.to_string(), &state.surface);
+        } else {
+            // No xdg-activation global (e.g. older compositor): best-effort fallback.
+            drop(state);
+            self.activate();
+        }
+    }
+
     fn is_active(&self) -> bool {
         self.borrow().active
     }