Fix Camera2D frame delay

Fixes camera frame delay by always doing a scroll update except when smoothing is active.

scene/2d/camera_2d.cpp

@@ -231,8 +231,9 @@ void Camera2D::_notification(int p_what) {
 		} break;
 		case NOTIFICATION_TRANSFORM_CHANGED: {
 
-			if (!is_processing_internal() && !is_physics_processing_internal())
+			if (!smoothing_enabled || Engine::get_singleton()->is_editor_hint()) {
 				_update_scroll();
+			}
 
 		} break;
 		case NOTIFICATION_ENTER_TREE: {