[prism] Fail jobs on SDK disconnect.

[lostluck]

If the control connection for a job is lost, eg. by an SDK worker crash (detected via grpc stream context cancel), then fail all extant instructions, and terminate the job, rather than leave it running perpetually.

Further, ensure the extant bundles are cleaned up from the element manager, to allow failed jobs to be properly garbage collected.

Reduce routine log messages to debug to avoid noise.

Use ctx.WithCancelCause properly, which requires calling context.Cause on the context.

Restructures the bundle processing loop in execute.go to better allow for eager bundle splitting. Would need to move bundle data acquisition to be moved out of stage.Execute, and split there.

Special thanks to the Swift SDK for being in a crashing on worker state to reliably validate this.

Related #28187

---

Thank you for your contribution! Follow this checklist to help us incorporate your contribution quickly and easily:

• Mention the appropriate issue in your description (for example: addresses #123), if applicable. This will automatically add a link to the pull request in the issue. If you would like the issue to automatically close on merging the pull request, comment fixes #<ISSUE NUMBER> instead.
• Update CHANGES.md with noteworthy changes.
• If this contribution is large, please file an Apache Individual Contributor License Agreement.

See the Contributor Guide for more tips on how to make review process smoother.

To check the build health, please visit https://github.com/apache/beam/blob/master/.test-infra/BUILD_STATUS.md

GitHub Actions Tests Status (on master branch)

See CI.md for more information about GitHub Actions CI or the workflows README to see a list of phrases to trigger workflows.

[github-actions]

Checks are failing. Will not request review until checks are succeeding. If you'd like to override that behavior, comment assign set of reviewers

[lostluck]

Looks like there's a flake with this approach.

[codecov]

Codecov Report

Merging #28193 (ceb39d8) into master (a472d1a) will decrease coverage by 0.03%.
The diff coverage is 46.28%.

@@            Coverage Diff             @@
##           master   #28193      +/-   ##
==========================================
- Coverage   72.37%   72.34%   -0.03%     
==========================================
  Files         680      680              
  Lines      100180   100235      +55     
==========================================
+ Hits        72506    72520      +14     
- Misses      26105    26140      +35     
- Partials     1569     1575       +6     

Flag	Coverage Δ
go	53.58% <46.28%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
...m/runners/prism/internal/jobservices/management.go	54.97% <0.00%> (ø)
...o/pkg/beam/runners/prism/internal/worker/bundle.go	43.33% <10.00%> (-1.38%)	⬇️
...o/pkg/beam/runners/prism/internal/worker/worker.go	45.21% <21.15%> (-3.35%)	⬇️
...am/runners/prism/internal/engine/elementmanager.go	79.45% <27.27%> (-1.47%)	⬇️
sdks/go/pkg/beam/runners/prism/internal/stage.go	82.97% <83.33%> (-0.28%)	⬇️
...pkg/beam/runners/prism/internal/jobservices/job.go	68.25% <87.50%> (+2.15%)	⬆️
sdks/go/pkg/beam/runners/prism/internal/execute.go	87.07% <88.88%> (+1.53%)	⬆️

... and 1 file with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[github-actions]

Assigning reviewers. If you would like to opt out of this review, comment assign to next reviewer:

R: @jrmccluskey for label go.

Available commands:

• stop reviewer notifications - opt out of the automated review tooling
• remind me after tests pass - tag the comment author after tests pass
• waiting on author - shift the attention set back to the author (any comment or push by the author will return the attention set to the reviewers)

The PR bot will only process comments in the main thread (not review comments).

[lostluck]

R: @riteshghorse

Jack's out for the weekend.

[github-actions]

Stopping reviewer notifications for this pull request: review requested by someone other than the bot, ceding control

[riteshghorse]

Looks good, thanks!