Ensure 0 backlog is sent when finishing processing restrictions.

[acrites]

Dataflow keeps track of the last backlog reported by a given restriction. So when we finish processing a restriction completely, we should send a final 0 backlog signal.

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[github-actions]

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[acrites]

Some BQ test seems to be failing with this error:

Caused by: java.lang.RuntimeException: Append to stream projects/apache-beam-testing/datasets/bq_imt_it_98743009714697/tables/alo_create_98761217632706/streams/_default failed with Status Code FAILED_PRECONDITION. The stream may not exist.
	at org.apache.beam.sdk.io.gcp.bigquery.StorageApiWriteUnshardedRecords$WriteRecordsDoFn$DestinationState.lambda$flush$9(StorageApiWriteUnshardedRecords.java:855)
	at org.apache.beam.sdk.io.gcp.bigquery.RetryManager.await(RetryManager.java:319)
	at org.apache.beam.sdk.io.gcp.bigquery.StorageApiWriteUnshardedRecords$WriteRecordsDoFn.flushAll(StorageApiWriteUnshardedRecords.java:1067)
	at org.apache.beam.sdk.io.gcp.bigquery.StorageApiWriteUnshardedRecords$WriteRecordsDoFn.finishBundle(StorageApiWriteUnshardedRecords.java:1254)
Caused by: com.google.cloud.bigquery.storage.v1.Exceptions$StreamWriterClosedException: FAILED_PRECONDITION: Connection is closed due to com.google.api.gax.rpc.PermissionDeniedException: io.grpc.StatusRuntimeException: PERMISSION_DENIED: Permission 'TABLES_UPDATE_DATA' denied on resource 'projects/apache-beam-testing/datasets/bq_imt_it_98743009714697/tables/alo_create_98761217632706' (or it may not exist).
	at app//com.google.cloud.bigquery.storage.v1.ConnectionWorker.appendInternal(ConnectionWorker.java:927)
	at app//com.google.cloud.bigquery.storage.v1.ConnectionWorker.append(ConnectionWorker.java:854)
	at app//com.google.cloud.bigquery.storage.v1.StreamWriter$SingleConnectionOrConnectionPool.append(StreamWriter.java:196)
	at app//com.google.cloud.bigquery.storage.v1.StreamWriter.appendWithUniqueId(StreamWriter.java:638)
	at app//com.google.cloud.bigquery.storage.v1.StreamWriter.append(StreamWriter.java:605)
	at app//com.google.cloud.bigquery.storage.v1.StreamWriter.append(StreamWriter.java:509)
	at app//org.apache.beam.sdk.io.gcp.bigquery.BigQueryServicesImpl$WriteStreamServiceImpl$1.appendRows(BigQueryServicesImpl.java:1659)
	at app//org.apache.beam.sdk.io.gcp.bigquery.StorageApiWriteUnshardedRecords$WriteRecordsDoFn$DestinationState.lambda$flush$8(StorageApiWriteUnshardedRecords.java:666)
	at app//org.apache.beam.sdk.io.gcp.bigquery.RetryManager$Operation.run(RetryManager.java:166)
	at app//org.apache.beam.sdk.io.gcp.bigquery.RetryManager.run(RetryManager.java:292)
	at app//org.apache.beam.sdk.io.gcp.bigquery.RetryManager.await(RetryManager.java:332)
	at app//org.apache.beam.sdk.io.gcp.bigquery.StorageApiWriteUnshardedRecords$WriteRecordsDoFn.flushAll(StorageApiWriteUnshardedRecords.java:1067)
	at app//org.apache.beam.sdk.io.gcp.bigquery.StorageApiWriteUnshardedRecords$WriteRecordsDoFn.finishBundle(StorageApiWriteUnshardedRecords.java:1254)
	at app//org.apache.beam.sdk.io.gcp.bigquery.StorageApiWriteUnshardedRecords$WriteRecordsDoFn$DoFnInvoker$bf057275.invokeFinishBundle(Unknown Source)
	at app//org.apache.beam.runners.core.SimpleDoFnRunner.finishBundle(SimpleDoFnRunner.java:242)
	at app//org.apache.beam.runners.core.SimplePushbackSideInputDoFnRunner.finishBundle(SimplePushbackSideInputDoFnRunner.java:133)
	at app//org.apache.beam.runners.direct.ParDoEvaluator.finishBundle(ParDoEvaluator.java:270)
	at app//org.apache.beam.runners.direct.DoFnLifecycleManagerRemovingTransformEvaluator.finishBundle(DoFnLifecycleManagerRemovingTransformEvaluator.java:73)
	at app//org.apache.beam.runners.direct.DirectTransformExecutor.finishBundle(DirectTransformExecutor.java:194)
	at app//org.apache.beam.runners.direct.DirectTransformExecutor.run(DirectTransformExecutor.java:132)
	at java.base@21.0.11/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
	at java.base@21.0.11/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base@21.0.11/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base@21.0.11/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base@21.0.11/java.lang.Thread.run(Thread.java:1583)

[acrites]

Run Java_GCP_IO_Direct PreCommit

[github-actions]

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R: @tvalentyn added as fallback since no labels match configuration

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