[VL] Non-default scan partition number settings could fail Uniffle shuffle

Error:

```
Executing SQL query from resource path /tpch-queries/q20.sql...
Error running query q20. Error: FATAL: org.apache.spark.SparkException: Job aborted due to stage failure: Task 100 in stage 10.0 failed 1 times, most recent failure: Lost task 100.0 in stage 10.0 (TID 308) (b019499e5170 executor driver): java.lang.IllegalStateException: nativeShuffleWriter should not be -1L
at org.apache.spark.shuffle.writer.VeloxUniffleColumnarShuffleWriter.writeImpl(VeloxUniffleColumnarShuffleWriter.java:206)
at org.apache.spark.shuffle.writer.RssShuffleWriter.write(RssShuffleWriter.java:209)
E20240603 10:42:58.345651 14593 Exceptions.h:67] Line: /__w/incubator-gluten/incubator-gluten/ep/build-velox/build/velox_ep/velox/exec/Task.cpp:1858, Function:terminate, Expression: Cancelled, Source: RUNTIME, ErrorCode: INVALID_STATE
at org.apache.spark.shuffle.ShuffleWriteProcessor.write(ShuffleWriteProcessor.scala:59)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:99)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:52)
at org.apache.spark.scheduler.Task.run(Task.scala:131)
at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:506)
at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1491)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:509)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

Driver stacktrace:
at org.apache.spark.scheduler.DAGScheduler.failJobAndIndependentStages(DAGScheduler.scala:2454)
at org.apache.spark.scheduler.DAGScheduler.$anonfun$abortStage$2(DAGScheduler.scala:2403)
at org.apache.spark.scheduler.DAGScheduler.$anonfun$abortStage$2$adapted(DAGScheduler.scala:2402)
at scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:62)
at scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:55)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:49)
at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:2402)
at org.apache.spark.scheduler.DAGScheduler.$anonfun$handleTaskSetFailed$1(DAGScheduler.scala:1160)
at org.apache.spark.scheduler.DAGScheduler.$anonfun$handleTaskSetFailed$1$adapted(DAGScheduler.scala:1160)
at scala.Option.foreach(Option.scala:407)
at org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:1160)
at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:2642)
at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2584)
at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2573)
at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:49)
Caused by: java.lang.IllegalStateException: nativeShuffleWriter should not be -1L
at org.apache.spark.shuffle.writer.VeloxUniffleColumnarShuffleWriter.writeImpl(VeloxUniffleColumnarShuffleWriter.java:206)
at org.apache.spark.shuffle.writer.RssShuffleWriter.write(RssShuffleWriter.java:209)
at org.apache.spark.shuffle.ShuffleWriteProcessor.write(ShuffleWriteProcessor.scala:59)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:99)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:52)
at org.apache.spark.scheduler.Task.run(Task.scala:131)
at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:506)
at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1491)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:509)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
```

To reproduce, use this PR: https://github.com/apache/incubator-gluten/pull/5987

Start with the reproduction described in PR 5987 and inspect VeloxUniffleColumnarShuffleWriter.java, especially the writeImpl failure at line 206. Trace how non-default scan partition numbers reach the Uniffle shuffle writer and compare them with the default setting. Done means the q20 reproduction no longer fails and coverage exists for non-default partition settings.

Written by the indexing model from the issue text.