fix: Cannot set property attributeName of #<MutationRecord> which has only a getter (#1173)

* fix: Cannot set property attributeName of #<MutationRecord> which has only a getter

* fix: attributeName readonly

packages/types/src/index.ts

@@ -265,14 +265,14 @@ export type hooksParam = {
 };
 
 // https://dom.spec.whatwg.org/#interface-mutationrecord
-export type mutationRecord = {
+export type mutationRecord = Readonly<{
   type: string;
   target: Node;
   oldValue: string | null;
   addedNodes: NodeList;
   removedNodes: NodeList;
   attributeName: string | null;
-};
+}>;
 
 export type textCursor = {
   node: Node;