Fix NPE when pruning info from query plan

[ZacBlanco]

Description

Fix an NPE when pruning happens when a query plan wasn't set for an execution. Mostly prevents log spam.

Motivation and Context

I noticed some frequent NPE messages in logs after merging #23257:

2024-08-29T03:37:16.5026254Z 2024-08-28T21:37:16.479-0600	ERROR	dispatcher-query-18	com.facebook.presto.execution.StateMachine	Error notifying state change listener for finalQueryInfo-20240829_033716_00316_5xfqn
2024-08-29T03:37:16.5027920Z java.lang.NullPointerException
2024-08-29T03:37:16.5029154Z 	at com.facebook.presto.execution.SqlQueryExecution.lambda$pruneFinishedQueryInfo$7(SqlQueryExecution.java:758)
2024-08-29T03:37:16.5031493Z 	at java.util.concurrent.atomic.AtomicReference.getAndUpdate(AtomicReference.java:160)
2024-08-29T03:37:16.5033058Z 	at com.facebook.presto.execution.SqlQueryExecution.pruneFinishedQueryInfo(SqlQueryExecution.java:757)
2024-08-29T03:37:16.5034631Z 	at com.facebook.presto.execution.QueryTracker.lambda$expireQuery$2(QueryTracker.java:201)
2024-08-29T03:37:16.5035718Z 	at java.util.Optional.ifPresent(Optional.java:159)
2024-08-29T03:37:16.5036990Z 	at com.facebook.presto.execution.QueryTracker.expireQuery(QueryTracker.java:200)
2024-08-29T03:37:16.5038406Z 	at com.facebook.presto.execution.SqlQueryManager.lambda$createQuery$5(SqlQueryManager.java:311)
2024-08-29T03:37:16.5040287Z 	at com.facebook.presto.execution.QueryStateMachine.lambda$addQueryInfoStateChangeListener$18(QueryStateMachine.java:985)
2024-08-29T03:37:16.5042362Z 	at com.facebook.presto.execution.StateMachine.fireStateChangedListener(StateMachine.java:229)
2024-08-29T03:37:16.5044309Z 	at com.facebook.presto.execution.StateMachine.lambda$fireStateChanged$0(StateMachine.java:221)
2024-08-29T03:37:16.5046020Z 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
2024-08-29T03:37:16.5047354Z 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
2024-08-29T03:37:16.5048354Z 	at java.lang.Thread.run(Thread.java:750)

Impact

N/A

Test Plan

N/A

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Release Notes

== NO RELEASE NOTE ==