feat: ArrayType nested literal

Author: comphead

spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala

@@ -760,9 +760,7 @@ object QueryPlanSerde extends Logging with CometExprShim {
             allowComplex = value == null ||
               // Nested literal support for native reader
               // can be tracked https://github.com/apache/datafusion-comet/issues/1937
-              // now supports only Array of primitive
-              (Seq(CometConf.SCAN_NATIVE_ICEBERG_COMPAT, CometConf.SCAN_NATIVE_DATAFUSION)
-                .contains(CometConf.COMET_NATIVE_SCAN_IMPL.get()) && dataType
+              (dataType
                 .isInstanceOf[ArrayType] && (!isComplexType(
                 dataType.asInstanceOf[ArrayType].elementType) || dataType
                 .asInstanceOf[ArrayType]

spark/src/test/scala/org/apache/comet/exec/CometNativeReaderSuite.scala

@@ -563,6 +563,6 @@ class CometNativeReaderSuite extends CometTestBase with AdaptiveSparkPlanHelper
       """
           |select 1 a
           |""".stripMargin,
-      "select array(array(1, 2, null), array(), array(10), null) from tbl")
+      "select array(array(1, 2, null), array(), array(10), null, array(null)) from tbl")
   }
 }