Make MenuOverlay consume all key presses so Scene doesn't respond to them when a menu is open.

src/ui/MenuOverlay.cpp

@@ -39,8 +39,10 @@ void MenuOverlay::onHoverKey(const event::HoverKey& e) {
 
 	if (e.action == GLFW_PRESS && e.key == GLFW_KEY_ESCAPE) {
 		requestDelete();
-		e.consume(this);
 	}
+
+	// Consume all key presses
+	e.consume(this);
 }