[I] JSON_EXTRACT_INDEX null pointer exception, this._arguments is null [pinot]

[via GitHub]

njasm opened a new issue, #15516:
URL: https://github.com/apache/pinot/issues/15516

   The following query fails with pinot **1.3.0** (using docker image  
`release-1.3.0-21-amazoncorretto` ) but works fine with **1.2.0** (docker image 
`1.2.0-21-amazoncorretto`)
   
   #### Query
   
   ```
   SELECT 
     JSON_EXTRACT_INDEX(data, '$.event.WorkerAttributes.userID', 'STRING', '-') 
as userID,
     data
   FROM "dev-callcenter-task-events"
   WHERE campaignID = '0193ffde-2594-7b23-8c10-deea28a58733'
     AND JSON_MATCH(data,'"$.event.WorkerAttributes.campaignUserRoleID" = 
''2''')
   ```
   
   - Stacktrace:
   
   ```
   Error Code: 200
   QueryExecutionError:
   Received error query execution result block: {200=QueryExecutionError:
   java.lang.NullPointerException: Cannot invoke "java.util.List.iterator()" 
because "this._arguments" is null
        at 
org.apache.pinot.core.operator.transform.function.BaseTransformFunction.getNullBitmap(BaseTransformFunction.java:785)
        at 
org.apache.pinot.core.operator.docvalsets.TransformBlockValSet.getNullBitmap(TransformBlockValSet.java:59)
        at 
org.apache.pinot.core.operator.streaming.StreamingSelectionOnlyOperator.getNextBlock(StreamingSelectionOnlyOperator.java:108)
        at 
org.apache.pinot.core.operator.streaming.StreamingSelectionOnlyOperator.getNextBlock(StreamingSelectionOnlyOperator.java:48)}
   
org.apache.pinot.query.service.dispatch.QueryDispatcher.runReducer(QueryDispatcher.java:454)
   
org.apache.pinot.query.service.dispatch.QueryDispatcher.submitAndReduce(QueryDispatcher.java:133)
   
org.apache.pinot.broker.requesthandler.MultiStageBrokerRequestHandler.handleRequest(MultiStageBrokerRequestHandler.java:255)
   
org.apache.pinot.broker.requesthandler.BaseBrokerRequestHandler.handleRequest(BaseBrokerRequestHandler.java:168)
   ```
   


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