Trino paimon catalog does NOT support list schemas

Trino v440 + Paimon 1.2.0 + JDK24

The paimon table lives on aliyun oss and I placed paimon-oss jar in plugin/paimon (also plugin/paimon/hdfs), when I want to list schemas of paimon catalog, it reported the following error:

```
io.trino.spi.TrinoException: Error listing schemas for catalog paimon: getSubject is not supported
at io.trino.metadata.MetadataListing.handleListingException(MetadataListing.java:358)
at io.trino.metadata.MetadataListing.listSchemas(MetadataListing.java:99)
at io.trino.metadata.MetadataListing.listSchemas(MetadataListing.java:90)
at io.trino.connector.informationschema.InformationSchemaPageSource.addSchemataRecords(InformationSchemaPageSource.java:331)
at io.trino.connector.informationschema.InformationSchemaPageSource.buildPages(InformationSchemaPageSource.java:227)
at io.trino.connector.informationschema.InformationSchemaPageSource.getNextPage(InformationSchemaPageSource.java:185)
at io.trino.operator.TableScanOperator.getOutput(TableScanOperator.java:266)
at io.trino.operator.Driver.processInternal(Driver.java:398)
at io.trino.operator.Driver.lambda$process$8(Driver.java:301)
at io.trino.operator.Driver.tryWithLock(Driver.java:704)
at io.trino.operator.Driver.process(Driver.java:293)
at io.trino.operator.Driver.processForDuration(Driver.java:264)
at io.trino.execution.SqlTaskExecution$DriverSplitRunner.processFor(SqlTaskExecution.java:887)
at io.trino.execution.executor.dedicated.SplitProcessor.run(SplitProcessor.java:76)
at io.trino.execution.executor.dedicated.TaskEntry$VersionEmbedderBridge.lambda$run$0(TaskEntry.java:191)
at io.trino.$gen.Trino_440____20250721_074422_2.run(Unknown Source)
at io.trino.execution.executor.dedicated.TaskEntry$VersionEmbedderBridge.run(TaskEntry.java:192)
at io.trino.execution.executor.scheduler.FairScheduler.runTask(FairScheduler.java:174)
at io.trino.execution.executor.scheduler.FairScheduler.lambda$submit$0(FairScheduler.java:161)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:545)
at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:131)
at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:76)
at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:82)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619)
at java.base/java.lang.Thread.run(Thread.java:1447)
Caused by: java.lang.UnsupportedOperationException: getSubject is not supported
at java.base/javax.security.auth.Subject.getSubject(Subject.java:277)
at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:569)
at io.trino.hdfs.TrinoFileSystemCache.getInternal(TrinoFileSystemCache.java:116)
at io.trino.hdfs.TrinoFileSystemCache.get(TrinoFileSystemCache.java:91)
at org.apache.hadoop.fs.ForwardingFileSystemCache.get(ForwardingFileSystemCache.java:38)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:479)
at org.apache.hadoop.fs.Path.getFileSystem(Path.java:361)
at io.trino.hdfs.HdfsEnvironment.lambda$getFileSystem$0(HdfsEnvironment.java:110)
at io.trino.hdfs.authentication.NoHdfsAuthentication.doAs(NoHdfsAuthentication.java:25)
at io.trino.hdfs.HdfsEnvironment.getFileSystem(HdfsEnvironment.java:109)
at io.trino.hdfs.HdfsEnvironment.getFileSystem(HdfsEnvironment.java:102)
at io.trino.filesystem.hdfs.HdfsFileSystem.directoryExists(HdfsFileSystem.java:254)
at io.trino.filesystem.manager.SwitchingFileSystem.directoryExists(SwitchingFileSystem.java:117)
at io.trino.filesystem.tracing.TracingFileSystem.lambda$directoryExists$5(TracingFileSystem.java:119)
at io.trino.filesystem.tracing.Tracing.withTracing(Tracing.java:47)
at io.trino.filesystem.tracing.TracingFileSystem.directoryExists(TracingFileSystem.java:119)
at org.apache.paimon.trino.fileio.TrinoFileIO.exists(TrinoFileIO.java:132)
at org.apache.paimon.fs.FileIOUtils.checkAccess(FileIOUtils.java:44)
at org.apache.paimon.fs.FileIO.get(FileIO.java:373)
at org.apache.paimon.catalog.CatalogFactory.createUnwrappedCatalog(CatalogFactory.java:97)
at org.apache.paimon.catalog.CatalogFactory.createCatalog(CatalogFactory.java:71)
at org.apache.paimon.catalog.CatalogFactory.createCatalog(CatalogFactory.java:67)
at org.apache.paimon.trino.catalog.TrinoCatalog.lambda$initSession$0(TrinoCatalog.java:87)
at org.apache.paimon.trino.ClassLoaderUtils.runWithContextClassLoader(ClassLoaderUtils.java:30)
at org.apache.paimon.trino.catalog.TrinoCatalog.initSession(TrinoCatalog.java:72)
at org.apache.paimon.trino.TrinoMetadata.listSchemaNames(TrinoMetadata.java:292)
at io.trino.plugin.base.classloader.ClassLoaderSafeConnectorMetadata.listSchemaNames(ClassLoaderSafeConnectorMetadata.java:198)
at io.trino.tracing.TracingConnectorMetadata.listSchemaNames(TracingConnectorMetadata.java:131)
at io.trino.metadata.MetadataManager.listSchemaNames(MetadataManager.java:258)
at io.trino.tracing.TracingMetadata.listSchemaNames(TracingMetadata.java:171)
at io.trino.metadata.MetadataListing.doListSchemas(MetadataListing.java:105)
at io.trino.metadata.MetadataListing.listSchemas(MetadataListing.java:96)
... 24 more
```

Start with org.apache.paimon.trino.catalog.TrinoMetadata.listSchemaNames and TrinoCatalog.initSession, then follow the reported path through TrinoFileIO.exists and HdfsEnvironment. Reproduce schema listing with the stated Trino, Paimon, JDK, and Aliyun OSS versions; done means listing schemas no longer fails with the getSubject error.

Written by the indexing model from the issue text.