feat:修改ros回归模型训练任务，添加样本权重

src/main/scala/com/aliyun/odps/spark/examples/makedata_recsys_r_rate/makedata_recsys_86_ros_sample_20260319.scala

@@ -19,7 +19,7 @@ object makedata_recsys_86_ros_sample_20260319 {
     val whatApps = param.getOrElse("whatApps", "0,4,5,21,3,6").split(",").toSet
     val whatPages = param.getOrElse("whatPages", "详情后沉浸页,回流后沉浸页&内页feed,首页feed,详情页").split(",").toSet
     val whatLabel = param.getOrElse("whatLabel", "return_n_uv_noself")
-    var filterLabel = param.getOrElse("filterLabel", "is_share")
+    val filterLabel = param.getOrElse("filterLabel", "is_share")
     val fuSampleRate = param.getOrElse("fuSampleRate", "-1.0").toDouble
     val notUseBucket = param.getOrElse("notUseBucket", "0").toInt
     val featureNameFile = param.getOrElse("featureName", "20241209_recsys_nor_name.txt")