Fixes missed RequestRedraw events in about_to_wait()

This fixes RequestRedraw events that can be missed in `about_to_wait()` which was reading from the cursor before `run_app_update()` is called.

This adds a subsequent read to update the redraw_requested flag if any `RequestRedraw` were sent.

Was reported in #16817

crates/bevy_winit/src/state.rs

@@ -583,6 +583,15 @@ impl<T: Event> ApplicationHandler<T> for WinitAppRunnerState<T> {
                 #[cfg(not(feature = "custom_cursor"))]
                 self.update_cursors();
                 self.ran_update_since_last_redraw = true;
+
+                // Read RequestRedraw events that may have been sent during the update
+                if let Some(app_redraw_events) =
+                    self.world().get_resource::<Events<RequestRedraw>>()
+                {
+                    if redraw_event_reader.read(app_redraw_events).last().is_some() {
+                        self.redraw_requested = true;
+                    }
+                }
             } else {
                 self.redraw_requested = true;
             }