Fix bundle finalizer callbacks for SDF

[aIbrahiim]

Fixes: #38710
Successful run: https://github.com/apache/beam/actions/runs/28039649218/job/83002285984?pr=39075

These tests were failing:
SplittableDoFnTest.testBundleFinalizationOccursOnBoundedSplittableDoFn SplittableDoFnTest.testBundleFinalizationOccursOnUnboundedSplittableDoFn
as they often timed out after 900 seconds with the job still in RUNNING

The tests use a Splittable DoFn that registers a BundleFinalizer callback and keeps checkpointing with resume() until that callback runs. If the callback never runs, the DoFn never outputs, the pipeline never finishes, and the test hits the timeout. The problem was in the Dataflow legacy streaming worker. Bundle-finalizer callbacks were only run when Windmill sent the finalize IDs back on a later work item (via source_state.finalize_ids or applied_finalize_ids in GetWorkResponse). Windmill documents that this is best effort, the commit can succeed but the IDs may never come back.

For Splittable DoFns with many resume() checkpoints, each step does a new commit and waits for the callback on the next work item and on real Dataflow those IDs often dont come back, so callbacks never run and the job hangs.

This got worse after bundle finalizer support was added for the streaming legacy worker:
#37723 Added bundle finalizer support to the non portable Dataflow worker and streaming ValidatesRunner tests were first excluded because they were still failing.
#37954 moved applied_finalize_ids handling and reenabled UsesBundleFinalizer tests for legacy streaming ValidatesRunner and hat helped some cases, but SDF tests could still hang on real Dataflow when finalize IDs were not echoed back.

#38287 in my previous PR I tried to stabilize SplittableDoFnTest on the test side (thread safety, timeouts) but that did not fix the worker behavior.

So when Windmill acknowledges a successful commit (CommitStatus.OK), we now run bundle finalizer callbacks right away, using the finalize_ids from that commit then a successful commit ACK means the state was persisted and it is same idea as applied_finalize_ids, but without relying on a later best effort GetWork.

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[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses an issue with bundle finalizer callbacks in the Dataflow streaming worker. By ensuring that finalize IDs are captured during the commit process and subsequently queued for application, the changes ensure that bundle finalization logic is correctly triggered upon successful work completion.

Highlights

• Bundle Finalizer Callbacks: Updated the streaming worker to correctly queue and process bundle finalizer IDs from successful commits.
• CompleteCommit Model Update: Extended the CompleteCommit class to include finalizeIds, ensuring this information is propagated through the commit pipeline.

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[gemini-code-assist]

Code Review

This pull request updates the CompleteCommit class to include finalizeIds extracted from the commit request. The StreamingDataflowWorker is updated to queue these applied finalize IDs upon a successful commit status. Additionally, StreamingApplianceWorkCommitter now passes the finalize IDs when creating a CompleteCommit. A trivial modification was also made to trigger the Dataflow Streaming post-commit tests. There are no review comments, so I have no feedback to provide.

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[aIbrahiim]

@damccorm @Abacn

[Abacn]

R: @arunpandianp could you please take a look? FYI the tests becomes very flaky in recent weeks

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[Abacn]

@aIbrahiim could you please explain a bit what was the cause of the flaky tests

[aIbrahiim]

@aIbrahiim could you please explain a bit what was the cause of the flaky tests

Yes sure, just updated the PR

[Abacn]

R: @acrites

[Abacn]

currently prefer #39092 just disabling the tests at the moment, since Dataflow classic streaming runner SDF support not completed yet