gtk: fix clicking on desktop notifications (#9146)

Clicking on desktop notifications sent by Ghostty _should_ cause the
window that sent the notification to come to the top. However, because
the notification that was sent targeted the wrong surface (apprt surface
vs core surface) and the window did not call `present()` on itself the
window would never be brought to the surface, the correct tab would not
be selected, etc.

Fixes #9145

src/apprt/gtk/class/surface.zig

@@ -1468,6 +1468,12 @@ pub const Surface = extern struct {
 
     pub fn sendDesktopNotification(self: *Self, title: [:0]const u8, body: [:0]const u8) void {
         const app = Application.default();
+        const priv: *Private = self.private();
+
+        const core_surface = priv.core_surface orelse {
+            log.warn("can't send notification because there is no core surface", .{});
+            return;
+        };
 
         const t = switch (title.len) {
             0 => "Ghostty",
@@ -1482,7 +1488,7 @@ pub const Surface = extern struct {
         defer icon.unref();
         notification.setIcon(icon.as(gio.Icon));
 
-        const pointer = glib.Variant.newUint64(@intFromPtr(self));
+        const pointer = glib.Variant.newUint64(@intFromPtr(core_surface));
         notification.setDefaultActionAndTargetValue(
             "app.present-surface",
             pointer,

src/apprt/gtk/class/window.zig

@@ -1585,6 +1585,9 @@ pub const Window = extern struct {
 
         // Grab focus
         surface.grabFocus();
+
+        // Bring the window to the front.
+        self.as(gtk.Window).present();
     }
 
     fn surfaceToggleFullscreen(