Fix bug that made the cache-busting propagation in composite objects not work

src/create-composite-object.js

@@ -87,7 +87,7 @@ module.exports = function createCompositeObject(options) {
 			compositeObject.recalculateSize();
 		});
 
-		compositeObject.objects[objectName].on("renderedToCache", () => {
+		compositeObject.objects[objectName].on("bustedCache", () => {
 			compositeObject.bustCache();
 		});
 	});