[pyspark] Add validation for param 'early_stopping_rounds' and 'validation_indicator_col' (#8250)

Signed-off-by: Weichen Xu <weichen.xu@databricks.com>

tests/python/test_spark/test_spark_local.py

@@ -1145,3 +1145,8 @@ class XgboostLocalTest(SparkTestCase):
             num_workers=4,
         )
         classifier.fit(data_trans)
+
+    def test_early_stop_param_validation(self):
+        classifier = SparkXGBClassifier(early_stopping_rounds=1)
+        with pytest.raises(ValueError, match="early_stopping_rounds"):
+            classifier.fit(self.cls_df_train)