add default error serializers to logger class

Author: mertcanaltin

lib/logger.js

@@ -318,8 +318,9 @@ class Logger {
 
     // Create serializers object with default err serializer
     this.#serializers = { __proto__: null };
-    // Add default err serializer (can be overridden)
+    // Add default error serializers (can be overridden)
     this.#serializers.err = stdSerializers.err;
+    this.#serializers.error = stdSerializers.err;
 
     // Add custom serializers (use serializerKeys from validation above)
     for (const key of serializerKeys) {