fix: left & right in ComparisonExpression should be final

Author: shizy818

iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/ir/PredicateWithUncorrelatedScalarSubqueryReconstructor.java

@@ -93,8 +93,6 @@ public void reconstructPredicateWithUncorrelatedScalarSubquery(
                 context, (SubqueryExpression) left, analysis.getWith());
         result.ifPresent(comparisonExpression::setShadowLeft);
       }
-      comparisonExpression.setLeft(left);
-      comparisonExpression.setRight(right);
     }
   }
 

iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/sql/ast/ComparisonExpression.java

@@ -100,9 +100,9 @@ public Operator negate() {
   }
 
   private final Operator operator;
-  private Expression left;
+  private final Expression left;
   private Expression shadowLeft;
-  private Expression right;
+  private final Expression right;
   private Expression shadowRight;
 
   public ComparisonExpression(Operator operator, Expression left, Expression right) {
@@ -140,14 +140,6 @@ public Expression getRight() {
     return shadowRight != null ? shadowRight : right;
   }
 
-  public void setLeft(Expression left) {
-    this.left = left;
-  }
-
-  public void setRight(Expression right) {
-    this.right = right;
-  }
-
   @Override
   public <R, C> R accept(AstVisitor<R, C> visitor, C context) {
     return visitor.visitComparisonExpression(this, context);