Method notifyMutation

src/core/runtime/runtime.js:454–456

* Notify the reactivity system that an object was mutated in-place. * Call this after operations like push, splice, append, etc. * @param {Object} obj - The mutated object

(obj)

         * @param {Object} obj - The mutated object
         */
        notifyMutation(obj) {
            this.reactivity.notifyProperty(obj);
        }

        morph(elt, content) {
            this.#morphEngine.morph(elt, content, {