[fix](planner)use tupleId of agg node to get its unsigned conjuncts (#21949)

fe/fe-core/src/main/java/org/apache/doris/analysis/Analyzer.java

@@ -2420,7 +2420,8 @@ public class Analyzer {
         // constant conjuncts should be push down to all leaf node except agg node.
         // (see getPredicatesBoundedByGroupbysSourceExpr method)
         // so we need remove constant conjuncts when expr is not a leaf node.
-        List<Expr> unassigned = getUnassignedConjuncts(node.getTblRefIds());
+        List<Expr> unassigned = getUnassignedConjuncts(
+                node instanceof AggregationNode ? node.getTupleIds() : node.getTblRefIds());
         if (!node.getChildren().isEmpty() && !(node instanceof AggregationNode)) {
             unassigned = unassigned.stream()
                     .filter(e -> !e.isConstant()).collect(Collectors.toList());

regression-test/data/nereids_p0/test_filter_pushdown_set.out

@@ -2,3 +2,9 @@
 -- !select1 --
 1	2
 
+-- !select2 --
+1	2
+
+-- !select3 --
+1	2
+

regression-test/suites/nereids_p0/test_filter_pushdown_set.groovy

@@ -19,4 +19,7 @@
      sql "SET enable_nereids_planner=true"
      sql "SET enable_fallback_to_original_planner=false"
      qt_select1 'select * from (select 1 as a, 2 as b union all select 3, 3) t where a = 1;'
+     sql "SET enable_nereids_planner=false"
+     qt_select2 'select * from (select 1 as a, 2 as b union all select 3, 3) t where a = 1;'
+     qt_select3 'select * from (select 1 as a, 2 as b union select 3, 3) t where a = 1;'
  }