[GLUTEN-11916][VL][TEST] Enable subquery/exists-subquery/exists-orderby-limit.sql with SPARK-57125 workaround

gluten-ut/spark41/src/test/resources/backends-velox/sql-tests/inputs/subquery/exists-subquery/exists-orderby-limit.sql

@@ -5,6 +5,18 @@
 --CONFIG_DIM1 spark.sql.codegen.wholeStage=false,spark.sql.codegen.factoryMode=CODEGEN_ONLY
 --CONFIG_DIM1 spark.sql.codegen.wholeStage=false,spark.sql.codegen.factoryMode=NO_CODEGEN
 
+-- GlutenSQLQueryTestSuite excludes ConvertToLocalRelation, ConstantFolding and
+-- NullPropagation by default to force queries through Gluten's offload paths.
+-- However, EXISTS+OFFSET queries hit Spark's LimitPushDown rule which produces
+-- `LocalLimit(Add(limit, offset), ...)` and assumes ConstantFolding will fold
+-- the Add. Without ConstantFolding the planner fails with
+-- `AssertionError: No plan for LocalLimit (1 + 2)` because BasicOperators only
+-- matches LocalLimit(IntegerLiteral, _). Re-enable ConstantFolding (and
+-- NullPropagation, which the test framework's --SET parser would split on
+-- the comma) for this file by keeping only ConvertToLocalRelation excluded.
+-- Tracked upstream as SPARK-57125.
+--SET spark.sql.optimizer.excludedRules=org.apache.spark.sql.catalyst.optimizer.ConvertToLocalRelation
+
 --ONLY_IF spark
 CREATE TEMPORARY VIEW EMP AS SELECT * FROM VALUES
   (100, "emp 1", date "2005-01-01", 100.00D, 10),

gluten-ut/spark41/src/test/scala/org/apache/gluten/utils/velox/VeloxSQLQueryTestSettings.scala

@@ -127,7 +127,7 @@ object VeloxSQLQueryTestSettings extends SQLQueryTestSettings {
     "subquery/exists-subquery/exists-cte.sql",
     "subquery/exists-subquery/exists-having.sql",
     "subquery/exists-subquery/exists-joins-and-set-ops.sql",
-    // TODO: fix on Spark-4.1 "subquery/exists-subquery/exists-orderby-limit.sql",
+    "subquery/exists-subquery/exists-orderby-limit.sql",
     "subquery/exists-subquery/exists-outside-filter.sql",
     "subquery/exists-subquery/exists-within-and-or.sql",
     "subquery/in-subquery/in-basic.sql",