[Improve][Transform] Update MetadataTransformConfig extends (#9082)

Author: hailin0

seatunnel-transforms-v2/src/main/java/org/apache/seatunnel/transform/metadata/MetadataTransformConfig.java

@@ -19,11 +19,11 @@
 
 import org.apache.seatunnel.api.configuration.Option;
 import org.apache.seatunnel.api.configuration.Options;
-import org.apache.seatunnel.transform.nlpmodel.ModelTransformConfig;
 
+import java.io.Serializable;
 import java.util.Map;
 
-public class MetadataTransformConfig extends ModelTransformConfig {
+public class MetadataTransformConfig implements Serializable {
 
     public static final String PLUGIN_NAME = "Metadata";