feat:after RemoveTrivialFilters call RemoveEmptyUnionBranches to prune empty union branches.

[Max-Cheng]

Description

Close #21506

Minimising Reproduction:

SELECT *
FROM (
        SELECT n.n_name AS "col1",
            n.n_nationkey AS "col2",
            CAST(null AS varchar) AS "col3"
        FROM tpch.sf1.nation n
        WHERE n.n_nationkey <= 3
        UNION ALL
        SELECT r.r_name AS "col1",
            CAST(r.r_regionkey AS bigint) AS "col2",
            r.r_comment AS "col3"
        FROM tpch.sf1.region r
    ) subquery
WHERE "col3" IN (
        SELECT r.r_comment
        FROM tpch.sf1.region r
    );
-- ERROR Trigger!
Query 20250806_041012_00085_hbymq failed: No catalog handle for partitioning handle: SINGLE
java.lang.IllegalStateException: No catalog handle for partitioning handle: SINGLE
        at io.trino.sql.planner.NodePartitioningManager.lambda$requiredCatalogHandle$0(NodePartitioningManager.java:299)
        at java.base/java.util.Optional.orElseThrow(Optional.java:403)
        at io.trino.sql.planner.NodePartitioningManager.requiredCatalogHandle(NodePartitioningManager.java:298)
        at io.trino.sql.planner.NodePartitioningManager.getConnectorBucketNodeMap(NodePartitioningManager.java:258)
        at io.trino.sql.planner.NodePartitioningManager.getBucketNodeMap(NodePartitioningManager.java:192)
        at io.trino.execution.scheduler.PipelinedQueryScheduler$DistributedStagesScheduler.createStageScheduler(PipelinedQueryScheduler.java:1170)
        at io.trino.execution.scheduler.PipelinedQueryScheduler$DistributedStagesScheduler.create(PipelinedQueryScheduler.java:949)
        at io.trino.execution.scheduler.PipelinedQueryScheduler.createDistributedStagesScheduler(PipelinedQueryScheduler.java:328)
        at io.trino.execution.scheduler.PipelinedQueryScheduler.start(PipelinedQueryScheduler.java:311)
        at io.trino.execution.SqlQueryExecution.start(SqlQueryExecution.java:440)
        at io.trino.execution.SqlQueryManager.createQuery(SqlQueryManager.java:284)
        at io.trino.dispatcher.LocalDispatchQuery.startExecution(LocalDispatchQuery.java:150)
        at io.trino.dispatcher.LocalDispatchQuery.lambda$waitForMinimumWorkers$1(LocalDispatchQuery.java:134)
        at io.airlift.concurrent.MoreFutures.lambda$addSuccessCallback$12(MoreFutures.java:570)
        at io.airlift.concurrent.MoreFutures$3.onSuccess(MoreFutures.java:545)
        at com.google.common.util.concurrent.Futures$CallbackListener.run(Futures.java:1132)
        at io.trino.$gen.Trino_dev____20250806_031006_2.run(Unknown Source)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619)
        at java.base/java.lang.Thread.run(Thread.java:1447)

Additional context and related issues

Should call RemoveEmptyUnionBranches after RemoveTrivialFilters
Prune empty union branches.

Release notes

( ) This is not user-visible or is docs only, and no release notes are required.
( ) Release notes are required. Please propose a release note for me.
( x ) Release notes are required, with the following suggested text:

## Section
* Enhance after `RemoveTrivialFilters` call `RemoveEmptyUnionBranches` to prune empty union branches. ({issue}`21506`)

[Max-Cheng]

@sopel39 PTAL

[github-actions]

This pull request has gone a while without any activity. Ask for help on #core-dev on Trino slack.

[wendigo]

@kasiafi ptal

[github-actions]

This pull request has gone a while without any activity. Ask for help on #core-dev on Trino slack.

[github-actions]

Closing this pull request, as it has been stale for six weeks. Feel free to re-open at any time.

[Max-Cheng]

@kasiafi @chenjian2664 PTAL

[kasiafi]

Merged. Thank you @Max-Cheng!