remove double serialize

Author: mertcanaltin

lib/logger.js

@@ -544,15 +544,6 @@ class Logger {
 
       // Apply serializers to object fields
       logFields = this.#applySerializers(restFields);
-
-      // Re-serialize err/error fields with err serializer for proper Error handling
-      if (logFields.err && isNativeError(restFields.err)) {
-        logFields.err = this.#serializers.err(restFields.err);
-      }
-
-      if (logFields.error && isNativeError(restFields.error)) {
-        logFields.error = this.#serializers.err(restFields.error);
-      }
     }
 
     const record = {