[native] Fix broken unit test due to IndexJoinNode change (prestodb#25691)

## Description
Fix broken unit test due to
prestodb#25668

## Motivation and Context
Note: Google Test filter = PrestoToVeloxQueryPlanTest.parseIndexJoinNode
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from PrestoToVeloxQueryPlanTest
[ RUN      ] PrestoToVeloxQueryPlanTest.parseIndexJoinNode

terminate called after throwing an instance of
'facebook::presto::protocol::OutOfRange'
what(): [json.exception.out_of_range.403] key 'lookupVariables' not
found IndexJoinNode List<VariableReferenceExpression> lookupVariables

## Impact
No Impact.

## Release Notes
Please follow [release notes
guidelines](https://github.com/prestodb/presto/wiki/Release-Notes-Guidelines)
and fill in the release notes below.

```
== NO RELEASE NOTE ==
```

Author: ericyuliu

presto-native-execution/presto_cpp/main/types/tests/PrestoToVeloxQueryPlanTest.cpp

@@ -235,7 +235,8 @@ TEST_F(PrestoToVeloxQueryPlanTest, parseIndexJoinNode) {
         "form": "AND",
         "returnType": "boolean"
       },
-      "type": "INNER"
+      "type": "INNER",
+      "lookupVariables": []
     }
   )";