Support runners other than DirectRunner for :examples:java:execute

[Abacn]

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[Abacn]

Tested with

./gradlew :examples:java:execute -PmainClass=org.apache.beam.examples.WordCount -Pexec.args=" \
       --runner=DataflowRunner \
       --region=us-central1 \
       --tempLocation=gs://.../tmp/ \
       --project=... \
       --jobName=$USER-wordcount-job
       --output=gs://.../output/output.txt \
       --experiments=use_staged_dataflow_worker_jar

[github-actions]

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[Abacn]

R: @shunping

Java PreCommit currently failing due to #35274 #35233

[github-actions]

Stopping reviewer notifications for this pull request: review requested by someone other than the bot, ceding control. If you'd like to restart, comment assign set of reviewers

[shunping]

Looks like the last successful run is three days ago.

https://github.com/apache/beam/actions/workflows/beam_PreCommit_Java.yml?query=branch%3Amaster+is%3Asuccess

[shunping]

Trying to revert the first red master run (https://github.com/apache/beam/actions/runs/15566528898). Let's see if the check can pass with this.
#35276

[Abacn]

It was due to #35233 and #35252, the latter one is fixed. Random PrismRunner tests still failing

[Abacn]

* What went wrong:
Execution failed for task ':runners:prism:java:test'.
> There were failing tests. See the report at: file:///runner/_work/beam/beam/runners/prism/java/build/reports/tests/test/index.html

BUILD FAILED in 13m 16s

windowing (org.apache.beam.runners.prism.PrismRunnerTest) failed

runners/prism/java/build/test-results/test/TEST-org.apache.beam.runners.prism.PrismRunnerTest.xml [took 2s]

org.apache.beam.vendor.grpc.v1p69p0.io.grpc.StatusRuntimeException: UNAVAILABLE: Network closed for unknown reason
	at app//org.apache.beam.vendor.grpc.v1p69p0.io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:268)
	at app//org.apache.beam.vendor.grpc.v1p69p0.io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:249)
	at app//org.apache.beam.vendor.grpc.v1p69p0.io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:167)
	at app//org.apache.beam.model.jobmanagement.v1.JobServiceGrpc$JobServiceBlockingStub.run(JobServiceGrpc.java:717)

latest run there is a single prism runner test failing, not related to this change

PTAL @shunping

[shunping]

Given the previous failed Java PreCommit tests on prism have been fixed at #35336, I think it is safe to LGTM here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.50%. Comparing base (de76cfa) to head (8b6756a).
Report is 59 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #35262   +/-   ##
=========================================
  Coverage     54.50%   54.50%           
  Complexity     1479     1479           
=========================================
  Files          1017     1017           
  Lines        160983   160983           
  Branches       1079     1079           
=========================================
  Hits          87737    87737           
  Misses        71140    71140           
  Partials       2106     2106           

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