Android: Fix black screen when exiting menu or resuming activity in lifecycle (#44327)

We should request repaint for the platform window when `resume_painting`
or entering
[Resumed](https://developer.android.com/guide/components/activities/activity-lifecycle#onresume)
state in Android activity lifecycle.

Fixes: #44300
Fixes: #40632
Fixes: #39737
Testing: Manually tested with following video proof


https://github.com/user-attachments/assets/046c045d-12d1-43fa-9387-fc504cc4bfe5

Signed-off-by: Euclid Ye <yezhizhenjiakang@gmail.com>

ports/servoshell/egl/app.rs

@@ -664,6 +664,7 @@ impl App {
         {
             warn!("Binding native surface to context failed ({error:?})");
         }
+        embedded_platform_window.request_repaint(&self.window());
         self.spin_event_loop();
     }
 }